1 definition by Nsten

Top Definition
Noun. An acronym for Yet Another Annoying iPhone User. Coined during lunch at Tres Hermanas restaurant in Sacramento, CA on Tuesday, October 14, 2008.
We know your new phone is cool. Yes we know about all the nifty applications it has. Please put it away now and stop being a YAAPU.
by Nsten October 14, 2008

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