A sock on the door
Hi,

I'm curious if 'a sock on the door' is just for symbolism. I mean, in real life, do people put a sock on the door when they......?

Question

A sock on the door
Hi, 

I'm curious if 'a sock on the door' is just for symbolism. I mean, in real life, do people put a sock on the door when they......?

Answer

yes. A ribbon or a tie also work.

Answer

I only recognise this from watching American TV/films.  Yes, they literally put a sock on the door.

But if your roommate locked you out and her boyfriend in (but no sock signal), I suppose you could say to another friend "can I sleep on your couch? My roomie's put a sock on the door."  Your friend would understand. ;)

Answer

A sock on the door knob is a signal that people inside are having sex,

Answer

....are making love? Yes.