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When one gets a girl off with their chin, giving a girl an orgasm with the use of your chin.

See also, Hairy Platypus
After the date, I took the girl back to my place and gave her a duck-billed platypus, and she liked it.
by platCHypus November 23, 2009

Words related to Duck-Billed Platypus

hairy hairy platypus orgasm platypus biker billed duck duck-billed