An informal gathering where appropriate attire for gentlemen is a sock over the genitals, and nothing else.
I wouldn't go in function room "C" if I were you, the Bristol Wheelchair Morris Dancer's Society are having their AGM, and it's turned into a Sock Party.
When two or more people put something heavy (like a bar of soap) in tube socks and repeatedly flail an unsuspecting victim.
Peter is being such a DB. He definitely deserves a sock party tonight.