An Embarrassing problem

Two dwarfs go into a bar, where they pick up two ‘working girls’ and take them to their separate hotel rooms.

The first dwarf, however, is unable to get a 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!’ … ALL NIGHT LONG.