"Are you mad?!" she replies, and keeps walking.
He turns, runs around the block and gets to the corner before she does. "Would ye let me bite yer breasts for £1,000?", he asks.
"Listen, I'm not that kind of woman! Got it?", she responds.
So the Scotsman runs around the next block and faces her again. "Would ye let me bite yer breasts just once for £10,000?"
She thinks about it for a moment and says, "Hmm, £10,000. Alright, just once but not here. Let's go to that alley over there."
So they enter the alley, where she removes her blouse to reveal her perfect breasts.
As soon as he sees them, the Scotsman grabs them, starts caressing them, fondling them slowly, kissing them, licking them, burying his face between them, but does not bite them.
The woman finally gets annoyed and asks, "Well? Are you going to bite them or not?"
"Nah", says the Scotsman. "Costs too much.