I need a comeback ASAP!?

OK, me and my friend are always playing around n saying mean stuff to each other but that's just how we are. well he asked me wt was i doing. i was like '' jux smocking my weed haha naw jp i dnt roll like dat'' den he said '' u betta not be smokin no weed, im da only one dat can do dat x) '' lol i need a comeback, i was thinkin of something like pshh da only thing u be smokin is _____...wat shud i put? cuz wer teens so it needs to be a teenager type of comeback.