Two dwarfs go into a bar, where they pick up two "working girls" and take them to their separate hotel rooms for an hour of pleasure. The first dwarf, however, is unable to get an a full erection.
His depression is made worse by the fact that, from the next room, he hears his friend shouting out cries of, "Here I come again! ONE, TWO, THREE .... UGH!"... " Here I come again! ONE, TWO, THREE.... UGH!"..... "Here I come again! ONE, TWO, THREE ... UGH!" This goes on for the whole hour.
Later back at the bar, the second dwarf asks the first, "How did it go? "
The first mutters, "It was embarrassing. I just couldn't get it up for the girl. "
The second dwarf shook his head. "You think that's embarrassing? I couldn't get on the bed."