单词：i see what you did there
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.
> 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.