Bladder Baby 

When your bladder is so full you look a little pregnant.

"haha check out my bladder baby, i just downed like a liter of water and 2 ensure!"

Bladder Baby by Jessiica--! January 28, 2009

baby bladder 

A medical condition that causes some otherwise healthy grown men to pee after one or two beers.

Jason has been to the bathroom 4 times already because he has a baby bladder.

baby bladder by True Wizzle April 8, 2015

baby badder 

Human male ejaculated male semen.

Man, I passed my old lady some baby badder and now she's pregnant.

baby badder by Joelj7891 October 25, 2005