Top Definition
Used to describe a bathroom that was once the ideal bathroom in a location, but has become repulsive due to the amount of excrement endured by it.
"Dude, that M Building bathroom used to be so clean, but it's so overshat now."
by theindianirish December 10, 2008
You do oversleep, but what about when you really have to take a dump and you miss your buss.
Child: Dad, i overshat. Can you drive me to school.

To a friend; I'll be 15 minutes late. I overshat.
by Ferravaag February 22, 2009

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