Red Dwarf, Series II

Holly:
We're getting a signal. It's probably nothing but I just thought I'd mention it.

Rimmer:
Aliens.

Lister:
Oh God, aliens... Your explanation for anything slightly peculiar is aliens, isn't it? You lose your keys - it's aliens. A picture falls off the wall - it's aliens. That time we used up a whole bog roll in a day, you thought that was aliens as well!

Rimmer:
Well, we didn't use it all, Lister. Who did?

Lister:
Rimmer, aliens used our bog roll?

Rimmer:
Just 'cos they're aliens, doesn't mean they don't have to visit the little boys' room. Although they probably do something weird and alien-esque, like it comes out of the top of their heads or something.

Lister:
Well, I wouldn't like to be stuck behind one in a cinema!