Found this scene from the cumtwice.net site that was posted above, and while watching it, I realized there were at least three (maybe four?) times that the guy cums, even though the title only indicates twice:
JULIA TAYLOR makes him cum twice
1. The first one is the least likely that he really came - perhaps precum? - at 7:12, the guy pulls out, and just below his balls there is something that drips off of them at 7:14 to 7:16. But still, I count that as one - well, maybe.
2. Not long afterwards, at 7:48, he unleashes a real load on her pussy.
3. He then has a somewhat weak spurt at 12:06.
4. He then finishes with another good sized load at 14:54.