"$2000 cash prize" joke

A man goes into a bar and sees a pile of cash on a table beneath a big sign that reads "$2,000 Cash Prize! See bartender for details."
Keeping one eye on the stack of money, the man goes over and asks the bartender what he has to do to win the prize.
"You have to do three things and its all yours," the bartender says.
"Just three things?" the guy asks, rubbing his hands now and imagining about walking out of the bar $2,000 richer.
"What are the three things?"
"Well," the bartender says, "first you have to go over to that 200-pound bouncer and knock him out..."
"After that, I've got a mean-tempered pitbull in the backroom who needs a tooth pulled..."
"Then you have to go and make love to the 80-year-old lady who lives upstairs."
"No problem," the guy says. He struts over to the bouncer and says, "Hey pal your shoelace is untied."
When the bouncer looks down at his shoes, the man flattens him with a single, solid uppercut.
Next he heads to the back room where the pitbull is housed.
The bartender can heara tremendous commotion from the back room it sounds like the pitbull has gone crazy.
After a few minutes the man emerges from the backroom, quite bloody and cut up and breathing heavily.
"Okay," he says, "where's the old broad that needs her tooth pulled??"