Nothing quite like a musical drinking game. 1
Get yourself a copy of the Police's "Roxanne" (originally released on Outlandos D'Amour in 1978), a lot of beer, and plenty of people.
Divide the room in half, one half being "Roxanne," the other half being "Red Light." Play the music. Anytime "Roxanne" is sung, the Roxanne side drinks. Likewise, anytime "red light" is sung, the "red light" side of the room drinks. It's that easy.