A term used when a person has totally owned something, or done really
well. Usually used in reference to a
test, sport, or other personal trial. The term can be reversed to imply
failure.
"
Dude, how did you do on that
test?"
"I totally anally penetrated it, I got a 99%!!"
or:
"How was your hockey
game?"
"Ugh, we lost 0-11, the other team totally anally penetrated our goalie!"