sumo and curtains went fishing one day in a boat. (sumo had to row the boat coz curtains is getting on a bit
he also had to drop the anchor coz curtains couldn't lift it
)
they had a cracking days fishing and wanted to go back the next day. curtains had a brainwave (he don't get many) he pulled a piece of chalk out of his pocket and drew an X on the bottom of the boat.
sumo looked puzzled and said "what you put an X on the bottom of the boat for??"
curtains replied "so we know where to fish tomorrow"
sumo replied "you bloody IDIOT, we might not get the same boat!!!"