YAAA
You Are An Asshole
pronounced "Ye ah uh ah"
Sounds affirmative, is pejorative.

Nothing better for that asshole in your life, maintain that pleasant face and say it loud enough for others to hear, so everyone knows the truth about the double-caf, triple shot, skinny, mocha-chino ordering assholes true hipness.
Frequent demanding customerdupe: Last time I asked for an everything bagel and I got a plain bagel, make sure I get the everything bagel this time, please.

Ever helpful counter help: YAAA! We'll be sure to get it right this time!

Dupe gets what they deserve and everyone working at the deli gets to hear you call that bitch customer an asshole and receive a smile in return.