rectal extraction

Dude 1: How did you get a B+ on this test? You didn't even study!
Dude 2: Rectal extractions.
Dude 1: ???
Dude 2: I was just pullin' answers out of my ass and got lucky.

Mr. Smith is so adamant about not letting his daughter Mary date until she is 27 years old, that he needs to have a rectal broomstick extraction procedure performed.