A person who remains on the toilet for an excessive allotment of time, allowing no one else to use the facilities.
*knock* *knock* "Hey, Shitting Beauty! You gonna hog the can for a 100 years, or what!?"
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Bat shit meaning: beyond being insane or totally crazy.
Beautiful meaning: attractive, lovely, gorgeous, good looking.

Combine the both, the "subject" is described as bat shit beautiful that combination put together.
That gigantic explotion turned out bat shit beautiful.
by Crasydraw January 18, 2018
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