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1 definition by JoelTheCat

 
1.
Yogurt In Your Face!

Used when you want to aggressively want someone to either ingest or be splattered by yogurt. Comes up surprisingly often.
Person 1: What do you think you're doing over there?
Person 2: YIYF!
Person 1: Agh! WTF, YIMF!
by JoelTheCat December 02, 2010