Can you give me a comback to an asthma joke =(?

i was on the bus and it was after gym this random kid started to make fun of me about my asthma at first i didnt care i was in the diversity council at my school it whent from race to religon to just being brown >=( so even after that he dose evreything over in a british accent my house is 40 minutes away and its got annoying so i pretended to laugh like it was funny so he thought he wouldnt get sh *t from me and even after that the girl i like started to hear and it whent downhill from there (sob*) so now i need a comeback for evretime he does it ( and please dont tell me to say your mom or your mom saidthat or something my life already suks)