da-da-dat, duh-dat dat!
For those of you still guessing, this is a Super Mario Brothers spoof, Azumanga Daioh style!
Poor Chiyo...Tomo is always planning to do something bad to her...
By the way, I edited the image I used for Tomo off of paint. (I don't know if anyone would notice the slight ajustment to her mouth, but just in case...)
Hope y'all like, later!