The Great Sexual Education

She can SMELL it, SHE CAN SMELL IT!!!!

You can’t lose the love game if you have the maid on your side...

Did the maid just wingman him? I think she did...

Page six, the penis looked like it had a set of hands.

... That condom is not going to fit.

That's quite the title!
"The maid has the rotten-nest personality"? I beg to differ...She is merely being a wingman for you two!
I quite liked how he tried to smooth over the fact he has a boner by making it a scientific explanation but she just straight up asked if it was an erection.
Great ending though! As I thought, her maid is such a great wingman. She knew what was up but didn't bother saying anything and just silently handed him a condom. What a thoughtful maid.

The following is inferred even if not actually said:

Shiratori-san: "I really wasn't expecting some sort of Maid Inquisition!"
Azuma-san (bursts in to jarring musical chord): "No-One Expects The Maid Inquisition!"

Not only that, ... She (Azuma-san) can "... SMELL What The Osananajimis Are Cooking!" (Fu-Fu-Fu).

It's presently not there, so will volunteer the Ojousama tag.

APPROVED!

Why does the man's penis keep changing color throughout the story?