Know that feeling, when annoying people ask you to do the impossible? Or having to stand up in the train after a long and busy day because some retarded person decided to use less trains during rush hour? Queuing in the supermarket and the cashier telling you she’s going to close her row after having stood there for 5 minutes?
If so, the 100 greatest movie insults of all time might just be what you need as inspiration. My favourite (amongst others) comes from Three Amigos: “You son of a motherless goat” Out.