Top definition
-noun
1. Invoking laughter on an unintended person.
Guy one: "Dude, what are you laughing at?"

Guy two: "I oversaw on this dudes computer, Two Girls One Cup video"

Guy one: "That's not cool, man!"

Guy two: "No man, the dude's reaction! Caused major collateral laughage man!"
by Padenormous February 10, 2011
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