1 definition by Sam Huge Schlong
A sexual act in which the man is having anal sex with a woman and, as he climaxes, the woman rotates her head 180 degrees and engorges herself on the juices inside the man's skull.
Dude 1: Dude, what's up with your head?
Dude 2: I was having sex with Mandy last night and she preying mantis'd me.
Dude 2: I was having sex with Mandy last night and she preying mantis'd me.
by Sam Huge Schlong October 27, 2009