How to say or suggest in an informal (and possibly rude) way that someone can be disregarded?

Question

**Warning**: the English language I would like to know of a Korean equivalent for is rude, and contained in the examples below. --- >! Friend A: *We need to start walking now, or we're going to be late. Where's John?*
>! Friend B: *Aaah, forget him. He can meet us there.* From this example, we can understand that B wishes to disregard John's feelings/needs, and is suggesting to A that they leave without him. We might understand friend B to be a little angry with John for being late. Another common phrase in English is: >! Forget 'em if they can't take a joke which means that if someone should be ignored if they don't have a sense of humour. What construction(s) could be used to express these examples in Korean?

Answer 1

One way to suggest that John can be disregarded is to stay, "Forget about John. He's a flake." The term "flake" is somewhat rude and implies that such a person cannot be counted on.

Answer 2

In the English language, we often use cliches and idioms, but these phrases are NOT meant literally. In your first example, Friend B doesn't want to be late, but this does not mean that he does not value John's feelings/needs. I agree that Friend B might be angry with John for not being ready to leave on time. But the expression is not hostile: "Forget about him. We'll meet him there." The polite thing to do in this case would be to text John and tell him that Friends A and B are leaving now and will meet him there.

The other phrase is, "If he can't take a joke, the hell with him!" This expression doesn't mean ignore him. This expression actually has more to do with the person who delivered the joke; it was not funny at all. Perhaps it was obnoxious or mean! Uneasy laughter from listeners. The jokester attempts to save face by uttering that expression.