A Man Is Walking Down The Street

You know what?  This really sounds like a good deal to me...

As he's walking down the street he comes up to a prostitute that says "I'll do anything for $300".

The man asks "anything?"
The prostitute replies with "yes".

So the man goes away to the money machine and gets $300

After getting the money he asked once more if the prostitute means absolutely anything, yes, but only if you can tell me in 3 words she replies.

He's goes away and thinks for a little bit, after returning he takes the money out and hands it to her and says "Paint my house"