up

I have often heard in movies a structure like " stick a nut etc up his ass".
Well,I wonder if it is correct or not .Can(should) we not use "into" here?

Usually "up" is in preference "into" when "ass" is the object of the preposition.

"Up" is the right way to say that.

Yeah, in this case you would always use "up," but then you should follow it with something exciting like "I'm gonna stick my foot so far up his ass the sweat on my knee will quench his thirst" Because that's funnier.

<Because that's funnier. >

For whom?

With up, instead of into, you can imagine somebody going right up the bowels further up into the body. I think that's why it's said like that. Also, bottom can mean butt which can mean ass.

The person doing it, of course.

Surely it depends on the position of the receiver?. Was it Tom Hanks?