Lonely hearts ad.

[NoMercy]

A woman places and ad looking for a man. She stipulates:
1. Must not beat me.
2. Must not run around on me.
3. Must be good in bed.

Next day, there is a knock at her door. She answers to find a man in a wheel chair, with no arms and no legs.
He tells her he is responding to her ad. Confused, she says, "But you have no arms!"
He replies, "Well, then I cannot beat you, can I?"
She says, "Ok. But you have no legs!"
He replies, "Then I cannot run around on you."
She thinks for a moments, then says, "But are you good in bed?"
The man leans back, smiles, and says, "Well......I rang the doorbell, didn't I?"

[marval]

HaHa very funny.

[Bert]

But you said there was a knock on the door, not that the doorbell rang.
I think a knock on the door is better - it not only implies length, but also hardness.