Short for "I'm sorry what?" but used to show your disinterest in what the other person has to say.

Best used when a person is speaking or after they are done to show that you are not interested and want to annoy them. Also good to use when losing an argument or debate.

Can really be used in any scenario to stop conversation and create either angry tension or laughter.
P1 "...then I got 95% on my test, I'm the best!"

P2 "imsrrywat?"
---------------------------------

P1: "Hey man hows-"

P2: "IMSRRYWAT!?"

P2: "Wow.. I hate you."
by jondore April 21, 2010
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