Have heard this one for years and years and no doubt there are 49 more verses

CANAL STREET

Walking down Canal Street
Knocking every door
Goddamn son-of-a-bitch
Couldn't find a whore

Finally found a whore
Trying to get it in
Goddamn son-of-a-bitch
Couldn't get it in

Finally got it in
Trying to get it out
Goddamn son-of-a-bitch
Couldn't get it out

Finally got it out
The thing was red and sore
The moral of this story:
Never fuck a whore.