"New Bike" joke

Joe wanted to buy a motorcycle. He doesn't have much luck, until, one day,
he comes across a beautiful Honda Gold Wing with a for sale sign on it for just $20.
The bike seems even more beautiful than a new one, although it is 10 years
old.
It is shiny and in absolutely mint condition. He immediately buys it, and
asks the seller how he kept it in such great condition for 10 years.
"Well, it's quite simple, really," says the seller, "whenever the bike is
outside and it's going to rain, rub Vaseline on the chrome. It protects it
from the rain." And he hands Joe a jar of vaseline.
That night, his girlfriend, Sandra, invites him over to meet her parents.
Naturally, they take the bike there. But just before they enter the house,
Sandra stops him and says, "I have to tell you something about my family
before we go in. When we eat dinner, we don't talk. In fact, the first
person who says anything during dinner has to do the dishes." "No problem,"
he says.
And in they go. Joe is shocked. Right smack in the middle of the living
room is a huge stack of dirty dishes. In the kitchen is another huge stack
of dishes. Piled up on the stairs, In the corridor, everywhere he looks,
dirty dishes.
They sit down to dinner and, sure enough, no one says a word. As dinner
progresses, Joe decides to take advantage of the situation. So he leans
over and kisses Sandra. No one says a word. So he reaches over and fondles
her breasts. Still, nobody says a word. So he stands up, grabs her, rips
her clothes off, throws her on the table, and screws her right there, in
front of her parents. His girlfriend is a little flustered, her dad is
obviously livid, and her mom horrified when He sits back down, but no one
says a word.
He looks at her mom. "She's got a great body", he thinks. So he grabs the
mom, bends her over the dinner table, and has his way with her every which
way right there on the dinner table. Now his girlfriend is furious and her
dad is boiling, but still, total silence.
All of a sudden there is a loud clap of thunder, and it starts to rain.
Joe remembers his motorcycle, so he pulls the jar of Vaseline from his
pocket. Suddenly the father backs away from the table and shouts: "All
right, enough already, I'll do the f***ing dishes!"