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noun. Said of a fugly, fucked up looking person who is to cover their face permanently if possible.
Justin: Maybe you should ask her out!
Seantel: Ishu crazy??? She a platypuss!
Justin: I kno...bet she put out easy.

Sarah Silverman is such a platypuss!
by xndrso November 06, 2007
The most fucked up animal ever concieved!!!
"its got webbed feet.. and its poisonous.. and its stinger is on the back of its leg!! and its got a bill! and it lays eggs for gods sake!! that is one fucked up animal!"
by Jon April 07, 2005