Dry Doctor
A Dry Doctor involves shutting off the water to a toilet and flushing so that minimal to no water remains. Then one with his/her friends will take turns crapping in said toilet to the point where it must be cleaned by hand, and no amount of flushing can push the crap down the toilet.
That guy working at the gas station is a douche bag so we Dry Doctored the bathroom. Lets see how he like's cleaning that up