The act of inserting a finger in the anus of the man while sucking his penis, thus causing a much more intense orgasim. When done correctly, it can illicit such a strong response in the male that he will actually speak in tounges and will talk of little else for days.
Dude 1: How was your date last night?
Dude 2: It was fucking awesome, she did "The Sara" on me. I got off so hard, I thought my brain was going to explode!