.....as this is the 'comic relief' thread laugh
I'm posting this here (I was looking for thread were we were discussing knots but I cant find it now!

R 18 (only look if you are broad minded)

Click to reveal..
An old retired sailor, puts on his old uniform and heads for the docks once
more, for old times sake.
He engages a prostitute and takes her up to a room.
He's soon going at it as well as he can for a guy his age, but needing some
reassurance, he asks, 'How am I doing??
The prostitute replies, 'Well, Pops, you're doing about three knots.
Three knots? he asks. What's that supposed to mean?
She says, 'You're knot hard, you're knot in, and you're knot getting your
money back.