High-Octane Fap Fuel: What really turns you on?

Everything on Fakku is titillating, but, depending on your
taste, some tropes are obviously more titillating than others,
and some are so titillating that you practically start rubbing
yourself without realizing it. Which tropes really turn you on?
Here's my personal list:

1/ Masturbation--I love masturbation--male or female--
in all its variations. In fact, almost everything else on my
list involves masturbation in one way or another.

2/ Exhibitionism--I love the joy of exhibitionism,
especially when it involves public masturbation.

3/ Caught Fapping by a MILF--I love a woman (especially
an older woman) who is totally cool with male masturbation.
If she catches someone fapping (not always by accident),
she calmly invites the flustered fellow to keep wanking
while she watches and diddles herself, thus creating a
hot masturbatory twosome.

4/ Schlicking while Sucking--I love the sight of a
woman who masturbates while performing fellatio.

5/ Pornotopia--I love the concept of an idealized fantasy
realm where sexual taboos and restrictions do not exist,
where you can fuck or suck anyone (or anything), any-
where, at any time, whenever the mood strikes you.
Related to 2/ above.

1. Loli/Pettanko - I definitely have a thing for more small or petite characters.
My mother was quite busty and anytime I see women with more shapely figure I picture
my mother and its an instant turn-off.

2. Kenomimi - Catgirls, bunnygirl, bears, oh my just add ears and a tail

3. Exhibitionism - I love the idea of public sex, even personally I love sheer
and tend to wear as little as possible when I can.

4. Tanline/ Tomboy - Athletic toned tanned girls make a work that much better
the contrast between the pale skin hidden an the healthy tan.

5. Pregnant - the enlarged tummy and swollen lactating breasts, the intoxicating
aroma of pregnancy hormones. All add to the fun and excitement.

You don't wanna know what makes the dead snake rise in zombie mode. You want to sleep comfy without the images of my kinks.

A few off the top of my head:

Stockings
A classic. I'm not normally into specific clotheswear but stockings just look really nice. I quite like it to thigh length.

Cheating/Netori/Netorare
Fucking someone else's girl - usually who's in a shitty relationship - just resonates with me on a carnal level.

MILFs
I think it's just because a lot of the stories involving them are about cheating, but MILFs are usually a treat. If they're lactating though, I'mma head out.

Mindbreak
Something oddly hot about a girl just giving in after a period of reluctancy. Even better if both parties bust nuts multiple times. Boners points if it ends with a pregnancy.

Condom to bareback
Just a general fetish, I think.

Monster Girl
Some monster girl sex positions can be outright daft, like centaurs. But a lot of the time the stories cover acceptance of the girl for who she is rather than her species, and it can be done pretty adorably.

As for body shape, generally I prefer a girl that's either smaller or average size, both in bust and build. So pettanko is generally a good one for me. Bustiness or overinflated tits aren't a dealbreaker, but it's not what I prefer. I'm definitely a thigh man.

Cheating/NTR (with some caveats)
To me, you can classify most hentai in two broad categories: Depictions of Love and Depictions of Lust. These two categories are not mutually exclusive and what hentai goes in each category depends on you. I am more into Depictions of Lust since well, the whole purpose of hentai is to help us masturbate and seeing lustful acts really helps.
I find that the best Depictions of Lust fall into Cheating/NTR since the character doing the cheating falls into such a lustful state that they are okay with being unfaithful. However, i stay far away from Netori, NTR x Forced, and NTR in which there isn't enough emotional separation from the victim of the NTR (examples: stories where victim finds out and emotionally breaksdown/resigns, stories where an emphasis on how upstanding/loving the victim is to the cheater, etc). This is because the victims emotional grief distracts you since you end up grieving for the victim. Now, if the art is good enough i can look past this, but that would take some GOD TIER artwork. An example of a Cheating/NTR that i find is good is utu's Jun-san Sneaks a Bite. The victim is a douchebag so you don't really care about him, the cheater is really horny, and the sex scenes are oozing with lust.
(An aside, there needs to be more cheating x one-night stand hentai. That shit would check all the right boxes for me)

Glasses
There are inanimate objects in life that people associate a trait to. For example, gold chains can be associated with wealth, muscles are associated with strength, and a wedding ring is associated with commitment. I associate glasses with intelligence. And i find intelligence to be really, really sexy.

Teacher x Student
As someone who has lived (and is still trying to live) their life on the straight and narrow, sometimes you need to indulge in the dark side. A teacher giving in to his student's advances (or vice versa) and engaging in a forbidden relationship fits the bill perfectly.

Office Lady
This is similar to the previous point: two co-workers having sexual interactions behind their other co-workers backs fits into the "indulging in the dark side" category. If the office lady hentai doesn't fit that category, the image of a voluptuous woman in a tight dress shirt, tight knee-high skirt, and high heels being bent over and fucked from behind on her desk or against the window overlooking the city skyline at night is insanely arousing.

Dark Skin x Kogal
Who doesn't love a cheery, fun-loving brown-skin lady?

6/ The First Fap--The first time a guy makes himself spurt
(in RL, at least) is often funny as well as titillating because it
usually occurs as a semi-accident. The kid has no idea what
he's trying to achieve; all he knows is that rubbing his cock
suddenly feels unusually good, so he just keeps rubbing until
he gets a big gooey surprise, accompanied by an intense jolt
of mind-blowing pleasure.

If he has any wits at all, he quickly figures out what happened,
and will often repeat the experience within an hour, by fapping
with purpose for the first time.

(Sometimes I think all male masturbation is a life-long attempt
to recapture the thrill of the first time.)

7/ Futanari Fapping--This trope is always a big turn-on,
especially when the futa discovers the thrill of male mas-
turbation for the first time. Related to /6 above.

I recommend Shindo L's Metamorphosis
(Emergence), which is the ultimate tale
of degradation and humiliation. It checks
all your boxes (plus a lot more).

Do you prefer stories with female victims?
I ask because some of the best domination/
degradation chapters on Fakku involve male
victims. For an excellent example, see:
Received Water by Kokuryuugan.

For a recent example, look for Takashi's Parent,
which is really dark and disturbing.

I also recommend dam's Chasing After Him,
which is an interesting story involving chikan,
humiliation, and sexual obsession.

Fair warning:
If Parent is too sad for you, Metamorphosis
(Emergence) will leave you contemplating
suicide. No one ever reads it more than once.

For now, you should work your way through
Syuuen's chapters. Not all of them will satisfy
you, but he specializes in cheating tales that
often involve blackmail or some other form
of coercion. I think his stuff hits the "sweet
spot" you're looking for: very kinky but not
too dark.

I especially recommend Immoral Wife, which
involves the vengeance-for-bullying trope.

In the meantime, I will scout around for other
chapters you might enjoy.

There's nothing at all "weird" about that.
I recommend When She Smiled at Me...
by usa, which is very sweet and romantic.

Are you referring mainly to the "cat's-eye"
pupils associated with vampires, succubi,
and other monster girls?

I recommend The Same Old Commute--Part 1 (& Part 2) by Dagashi,
in which a domineering office lady (a 30+ virgin) is seduced by a brash
subordinate, thus awakening the sexually-insatiable beast that has lain
dormant within her. The artwork is rough, but very expressive, and the
sexual action is hot, fleshy, and energetic, with good facial expressions.