I seem to have a problem…

My partner and I were brainstorming ideas for a comic we could update frequently. Something lighthearted and funny; which would draw readers in and bring attention to our other works in various genres. As we brainstormed I noticed a problem:

It is very difficult for me to come up with lighthearted, funny ideas that don’t take a horrific turn at some point in the story. o_O This really makes me wonder what the hell is wrong in my brain that makes happiness hard to write? I certainly enjoy funny online comics and laugh at comedic parts in books, yet when I try to sit and plot out a funny script where nothing horrid will happen and it only involves real people; no magic, no creatures – I draw a complete blank. 0.0

Any suggestions on how to leap this hurdle?