All expressions must originate somewhere. I want to know where the expression 'finger in your bum' comes from. e.g. "David, get your finger out of your bum and start doing your homework." - I wonder if it originates from Cavemen times...
(Subtitles to basic homosapien noises)
Caveman 1: Do we have fire today?
Caveman 2: No, John hasn't got the firewood yet.
Caveman 1: Why not?
Caveman 2: He still has his finger in his bum.
Caveman 1: Why does he do that?
Caveman 2: He says he puts the hunted animals in there and now he can't retrieve them.
Caveman 1: Well it will be hard to get it out with a finger.
Caveman 2: Yes, I did offer help last moon time. We tried several positions to try and get them out.
Caveman 1: Did you use any tools?
Caveman 2: Just my downstairs finger. But you can only use it when its pointing to the gods. Otherwise it will not go in his bum.
Caveman 1: But you did not find any animals?
Caveman 2: No. But we found those white spirits that were hiding in my downstairs finger. They flew out all over his hide.
Caveman 3: Ok, that's just gay.