A form of plastic surgery in which a man attaches a duck-bill to his dick and a beaver tail to his balls.
Celeste: "Hey Cody, i really enjoyed your platyplasty last night"
Cody: "Yea sorry about the tail-to-your-testicles incident"
Cody: "Yea sorry about the tail-to-your-testicles incident"
by Perry the Platypus October 28, 2008