Three drunks show up at the local whorehouse and the madam realizes they are too drunk to be able to function.

One by one, she sends them up to a room containing an inflatable rubber female doll.

The first drunk returns bragging about what great sex he just got done having; the second one does the same, but the third one returns with a puzzled look on his face.

When asked about it by his buddies he says, I thought I was doing great until I bit her on the tit, she let a fart and flew out the window!