Subject: You should've said...
Author:
Posted on: 2014-04-04 14:30:00 UTC
"Grammer is very impotent!" That would've been funnier.
I actually don't remember pranking someone with bad grammar, but I remember one time that kind of gets close: one time for a composition lesson that happened to fall on April Fool's Day, I took the text of something I was doing and I rendered it entirely in the alien font from the movie District 9 instead of its original English. It wasn't a very successful prank, but hey.