Top Definition
Similar to LOLcats, an ALFalanche is an onslaught of ALF images made in response to an inane post on any given message board.
Person 1: Holy shit, did you see that retarded post by Chad?

Person 2: Yeah, he deserves the LOLcats

Person 1: Nah, the ALFalanche is the better option.
by Alex Ovechkin May 31, 2009
5 Words related to ALFalanche

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