a "Krupinski"
when you correct someone's grammar but you're fucking wrong
Dude #1: Hey, that's has a hyphen.
Dude #2: No it doesn't, idiot, you totally just pulled a "Krupinski"
Dude #2: No it doesn't, idiot, you totally just pulled a "Krupinski"
krupinski
A krupinski is someone who often has a high intelligance and very quick witted. They often are amused by dirty or politicaly incorrect humor. They almost always get what they want.
Oh my god that person is such a Krupinski!