Ha ha

It seems an awfully long time since we had a joke, so here's a rather irreverent one.

A nun is having a bath.  There is a knock at the door.  "Who is it?" she shouts.  "It's the blind man" comes the reply.  The nun thinks about it for a few seconds, then says "OK, you can come in".  The door opens and a man comes in, looks at the nun and says "Nice tits - now which window is it you want me to measure up for a blind?"