1. The Lance Vance Dance consistes of the video game character shooting out of a helicopter and cussing out people who can't hear him.
2. Your best friend humping your couch.
2. "Natalie totally did the Lance Vance Dance on Colleen's couch."
Grand Theft Auto: Vice City's character Lance Vance and Tommy Vercetti are on the 'Phnom Penh' Mission in which the Lance Vance Dance is done for the first time.
The Lance Vance Dance is...
1. Screaming obscene insults and shooting people with a high powered automatic weapon from a helicopter.
2. An enamored psychotic GTA: Vice City fan humping a couch and shouting DO THE LONCE VONCE DONCE.
Colleen: "YOU DIDN'T INVITE ME TO DO THE LANCE VANCE DANCE?!"
Colleen: I wouldn't sit on that.
Colleen: Natalie did the Lance Vance dance on it.
Friend: OHH SICK!