Lunch Nazi
Someone (commonly in the group of people you usually go to lunch with) who dictates the time at which lunch is taken.
Steve is such a Lunch Nazi! He won't let us go to lunch until 11:30... What an ass!
Lunch Nazi
An incredibly rude or insanely strict cafeteria worker. They like to make mountains out of molehills and make you stay after lunch and clean up the tables for talking in a whisper.
Mrs. Juten is such a Lunch Nazi! She made me pick up the floor for talking to Julie!