1. When somebody destroys the bathroom with shit.
2. When somebody's taking a shit while having a spasm
Man I went to the gas-station bathroom, somebody took a shitsizm, the toilet wasn't enough to contain it, it was smeared all over the walls.
defecating uncontrollably, usually in a public bathroom of a less then fine establishment, i.e. truck stops, gas stations, waffle houses, and leaving the mess for others to have to witness
Man, some loser shitsizmed all over the bathroom stalls!!
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