Maybe you can write a comic about something that's funny with a meaning. A comic always needs a catch phrase, wit and humor, and some knowledge. I don't know, but here are some topics I'm thinking of :
~ Nerds ( example : guy one : yo mama so dumb she doesn't even know what a nanosecond is!...etc. )
~ Dumb popular people ( pop grl : ew look at her uniform grl : ur wearing the same...etc)
~ Disgusting people ( Guy : Woah this burger looks like droppings! Guy 2 : (throws up)
Okay that's all I can do. OH! How about puns!? if you don't no what those are, look them up. I'm sorry if these ideas are bad. It took like a few seconds
Oh well...