Top definition
the product of two persons having anal sex. A battybaby is formed from anal sex, three days after a large black wart will appear on the receiver of the anal sex's back. This will swell up to the size of a baby eventually, and it will pop, releasing a battybaby. The only known contraception method is to drink 12 litres of jenkem, which will result in a 23-day coma. Afterwartrds large purple zits will appear all of both people's anuses, eventually turning into scabs with engraved words of "batty".
Guy 1: Yotech, did u see that guy?
Guy2: Yopench, he wa a battybaby!
Battybaby:*snivels*
by zolidpaulsbiggestfan October 29, 2010
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