An American guy about 21 walks in a pub and sits next to a middle aged looking British man.
The man orders a beer and the man asks, "so old chap, have you been shakin' in the bed with a special someone? anyone?"
"no, not really" the guy replies.
"But, there is this girl y'know? But i heard she's hard to get in bed..."
"Hmmmm hard as a walnut?" "You better believe it!" he replies.
"Well well well, i hope you crack-er open."