For what I am about to write I apologise. On no level whatsoever does the following scenario and characters seem feasible but they've been in my head this way for so long that I now believe them to be true. Can anyone tell me what sitcom it was and whether I got the situation right.
Now, the two characters/actors I remember were Mollie Sugden and Donald Hewlett who is better known as playing Lieutenant-Colonel Charles Reynolds in It Ain't Half Hot Mum.
This is where it gets wierd...
The scene is in my memory as being sci-fi - already a long shot - but it has a group of people talking in a room about a lavatory being on the wall rather than the floor. That's funny in itself but the bit that always sticks in the memory is when Donald Hewlett comes in.
DONALD: "You're lucky - ours is on the ceiling!"
The very idea of using a toilet in this place always makes me smile. Anyone have an idea what it was? I think it was early 1980s and may have been on ITV.