pulling a gerrit

when a guy is thrusted into a someone's boobs with so much intensity it is possible to bite it unintentionally.

"Bob totally pulled a Gerrit on Kenzie today!"

Guy walks in crying
Friend "Whats the matter?"
Guy "i was just pulling a Gerrit on Lared. i didn't mean to"
Friend "oh my gawd, im so sorry man!"
Guy " i know, man. i know."