Top Definition
A mobile app college kids use to anonymously talk shit and post witty things to people nearby.
Some frat bro is talking mad shit on Yik Yak.
by oolytoolypey September 05, 2014
3 more definitions
A app avalible to college students to talk anonymously to people in their area or make anonymous comments to get votes. If a "yak" gets five down votes its deleted because its considered offensive.
Did you see what those guys were saying on yikyak earlier?
by Miss Scarlet January 12, 2015
vomit (from the thai)
child vomits

Old Man: "Yik yak!"
by PhyllisDean August 06, 2009
a girls junk
that girls yikyak tasted funny last night
by Bob The Builder7211 March 06, 2011

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