opening act 

when a dude sticks his pointer finger in a chicks vagina and his ring finger and pinky in her butt.

usually happens when the chick wants to take it up a level from the "shocker" following the "opening act" comes the"show stopper"

opening act by alwaysgone November 9, 2009

Opening Act 

The opening act is what you call the person who initiates intercouse for the sexual humiliating houdini. Precedes the closing act.

Person 1: Hey dude, you wanna houdini my girl with me?

Person 2: Yeah for sure, you got the opening act?

Person 1: This shit's gonna be hilarious.

Opening Act by B.Hop February 17, 2009