Two dwarfs go into a bar...

Two dwarfs go into a bar, where they pick up two prostitutes and take them
to their separate hotel rooms. The first dwarf, however, is unable to get an
erection. His depression is made worse by the fact that, from the next room,
he hears his little friend shouting out cries of "Here I come again ...ONE,
TWO, THREE...UUH all night long. In the morning, the second dwarf asks the
first, "How did it go?" The first mutters, "It was so embarrassing. I simply
couldn't get an erection." The second dwarf shook his head. "You think
that's embarrassing?"

"I couldn't even get on the bed."