You see what I did there?
1. A way of (re)pointing out a particularly obvious joke so as to give it more emphasis.
2. A way of pointing out a particularly obscure joke so as to enlighten someone else.
[ Origin: Unknown ]
1. While watching Star Wars:
Han Solo: She may not look like much, but she's got it where it counts
Me: I'm going to start calling your mom the Millennium Falcon.
Sean: *cries like a girl*
Me: Yeah, you see what I did there?