Top Definition
A lesbian sex act in which the two women rub there pussys together usually whilst laying down. (unless you get circus porn...those crazy acrobats)
Man nobody knows what a tribber is
by Gareth February 27, 2005
1 more definition
Someone who reads about philosophy and news on the Facebook: Tribbers.
Did you read about the comparison between polygamy and gay marriage on "Tribbers?"
by CosmoThinker January 12, 2011

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