Smart way of saying stick middle finger up?
Flag off. Hand gesture of "**** you". I think Americans call it "flip the bird" (don't know what the **** birds have to do with it), but I'm writing an essay for University work and google is it's usual unhelpful self.
Anyone got any suggestions?
Edit: It's a film essay, specifically Riding in Cars with Boys, and there's a scene where Jason flags off a guy talking to his mother.