I was called a communist for not giving unlimited ketchup packets.
The guy ordered one small fry and wanted no less than thirty packets...
I told him I could give him some but not that much (we weren't allowed) and he turned around with, "What are you, a communist? This is America, dammit!"
He went on about this a little longer but I was still kinda stunned at his choice of insult that I can't remember the rest!