1 definition by psuedonymtastic adventures
Noun: A derogatory term used to describe someone who is so retarded that they were likely conceived as an atrociously tragic accident through penetrative bumsex.
Bill: Did you see Ali on Friday night acting like a complete donkey?
Ted: Yes! She's such a fucking bumbaby.
Bill: Dude. Sweet call.
Ted: Yes! She's such a fucking bumbaby.
Bill: Dude. Sweet call.
by psuedonymtastic adventures July 27, 2011