This doujin page seams so familiar but I can't remember anything.

I'll post the source if I ever come across it. Probably wont though.

Props to who ever does.

It's one of the Plug Suit Fetish comics, don't know which volume though. Try a Rapidsearch on 4chan, that might help, or at least get you the other volumes.

I have a hard time imagining Asuka NOT snapping a molester in half like a cheap ruler.

The whole doujin is here:
http://www.doujinlife.com/plugsuit-fetish-3_3620/#.UQgRlx2_B8F

BakaHoushi said:

I have a hard time imagining Asuka NOT snapping a molester in half like a cheap ruler.

That is why she is with it. She always said Shinji should be more a man.