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 a hard on."
The second dwarf shook his head. "You think that's embarrassing?, I couldn't even get on the f_cking bed..."