WTF did I just watch?

It's just coolest. No need to use "most" if you're already going to use a superlative adjective.

Also, if that was seriously the coolest you've seen, you're definitely new to the internet.

I apologize, I meant the coolest video I saw up to this point, because I don't look at Hatsune Miku's videos that much anymore like I used to.

Sorry if I wasn't being specific.

If you get a woody watching that video, you've really got to set higher standards. If I was gonna rub one out, I wouldn't waste it on that!

Okay where's my knife