Top Definition
A poo that lands on the front sloping part of the toilet bowl is called a reverse koala.

Picture a koala bear with its arms wrapped around a tree.
Now picture a toilet.
Now picture yourself wrapped around the toilet like the koala.
You will find yourself in reverse on the toilet.
Now take an enormous shit. Where's that shit gonna end up?
In the wrong place, that's where!
"Bro, I totally left a massive reverse koala at Jimmy's Mom's house!"

"That's fucking gross! Fucking good shit bro"
by khat5e October 27, 2009

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