What is Pac-off?
1.
A way to determine who does something, like an alternative to rock-paper-scissors, wherein participants each sing 4 lines about Pac-Man. "Pac-Man Fever" is strictly prohibbited.
"You're too cheap to pay your tab!"
"That's it bitch, you just called out a Pac-Off!"
See
2.
A means of arbitrating a minor dispute, such as paying the tab at a restaurant or buying a round of drinks at a bar.
The participants sing 4 lines about Pac-Man, in the style of a parody of a popular song, ie. "Roxanne" by the Police.
As the custom is observed, "Pac-Man Fever" is strictly prohibited.
Who's buying this round?
Me? I think not, it's your turn!
A Pac-Off? You got it!
"Pac-Mannnn... you don't have to chase those ghosts tonight.
Eat up all the berries.
You look so much like your wiiife.
Paaaac-Mannnn!"
to the tune of 'Roxanne'
See
