The action of having sex with a girl on her period and, subsequently, slapping her on the
forehead with your, now blood covered, penis. This action causes the girl to look
like she was brutally bludgeoned, but, in fact, has just engaged in some good ol' fashioned
fun.
"Did you see those pics of
Sylvia?! She looked
like she got her head bashed in!!"
"No way man, she was just given the old
bloody bludgeon. Look, shes smiling in the picture."