Actually Pinky Lee, the main source of humor is the fact that your comically inept in the field of realizing hes fucking with you. I'm sure you must realize hes joking right? If that managed to escape you, which I'm pretty sure makes you mildly retarded, then I'll forgive your responses, but otherwise there is no excuse for you. I'll give you an example:
Lets say Milhouse calls you a ******. You'd probably talk about how its racist. This is because you completely lack the ability to put his statements or the statements of any others in any context other than literal. The correct reponse would be either a picture of a dead body or "I hate being a stupid blackie
".