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Sometimes used as a sarcastic response to a dumb trick. Or a trick meant for noobs.
-Guy1: Hey guys! If you post your credit card and social security number, this forum will out automatically censor it!

-Guy2: Okay... Wait! I see what you did there.
by unum March 04, 2008
A common turn of phrase on the internet, generally used as an expression of quiet, subdued admiration for one's wit. Especially appropriate after a particularly deft pun.
Person 1: You hear about that guy who stole all the plumbing fixtures from that house? He even took all the toilets. The police have nothing to go on.

Person 2: Heh. I see what you did there.
by TobyTheRobot June 26, 2007
Usually a sarcastic response to somebody who obviously thinks that they have been more clever than they actually have. Seen mostly in online forums; often abbreviated ISWYDT.
Person1: Microsoft makes a decent word processor.
Person2: Micro$oft Word sux!!
Person3: I see what you did there.
by rudstyle January 31, 2008
A phrase of obvious sarcasm, used in message boards and the like, to point out that a previous post was not funny even though the creator of the unfunny post thought it was.

See also:
STFU, GTFO, gb2/
Poster 1: Hay guys I just insulted some kid in an online forum! HAHAHAHAHA

Poster 2: I see what you did there.
by Merovingian July 23, 2005