Hello, In my lesson to-day, Philip Cheeter says "sucker" to a restaurant-worker. I got the translation of this word and it seems to be an insult. I don't understand why he is insulting this person... ? Can somebody explain ? Thanks !
Also, "so long, sucker" is a set phrase which is used when you are leaving and you have beaten someone, or done something that they can do nothing about. "Sucker" implies that they are stupid or powerless.