Check out the video from Lady Bunny's Gay VN jokes here. Quite good.
The best one was:
"Power-bottom Roman Heart recently ran out of a club completely nude and tried to hail a cab. The cabbie pulls up and says "Excuse me sir, you don't have any clothes on. How do you plan to pay?" and Roman Heart throws his legs behind his head and starts fingering his hole.
The cabbie looks over and says "Do you have anything smaller?"