Top Definition
When a person blocks another person from enjoying the greatest amount of fun. This applies to anything which blocks another person from having fun.
Chris: Heck yeah, i'm whopping everyone in this game and all the ladies are seeing it!

(Joe, the douchebag shows up)

Chris: Dammit, i'm getting fun-blocked for sure.
by THE_COLORADO_GUYS February 01, 2010
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