I'm back from my poo! Okay, my few minutes in the lounge and that skeleton in the outhouse thing that says five phrases (available at Walmart, check it out; my favorite line is "uuuhnnngg, all through here... uh, maybe not" cuz we all know skeletons are full of fecal matter) reminded me of what I enjoy most in the world: fart jokes.
And not just any fart jokes, no sirree! 
This CC numbered 401 must contain the following two elements and they can appear in any panel:
a) You must mention methane.
b) You must use the Misc:Explosion background.... *boom*
Bonus points if you get both elements, with a plot or good premise, into one panel. More if we actually see turds fly. Automatic winner if the turds coldcock John McCain.
Contest will end October 1, since I figure the selection of Christmas goods at Kmart will be on sale by then.
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Say something cryptic then leave snickering.