I'm going to lie about forgetting peoples names
Why are you going to lie about forgetting people's names?
Sometimes I just wanna insult a person in a harsh way just for fun and can get away with it if I do not use names
It's pretty hurtful that you could try and insult someone by pretending to forget their name. Why not try to treat everyone you meet with respect?
I'm only using this methaphor as sarcasm, not to hurt anyone
The thing about humor is that it can hurt someone if taken thewrong way.   Just make sure that no one feels insulted when doing this