Basically, a (old) man who fucks people (Preferably other men) in the shower.
1. Our soccer trainer is a real shower daddy, last week he did both George and Pete!

2. ''Big Bill'' is the shower daddy of the C-block in San Quentin.

by Garber Jr. October 29, 2007
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A shower daddy is a jail preference. Usually when a guy that is new and gets Bitchafided by a bigger guy that is there. The bigger guy is considered the shower daddy.
Requise is his shower daddy.
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An event in which a father-to-be as a bachelor party like event before the bundle of joy arrives
We are throwing mike a daddy shower, headed to a strip club, throwing back beers.... cuz you know we wont be able to do that once jr gets here
by zyxwvuts8765 April 6, 2014
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the name dale arbus from horrible bosses wanted to use
me: we’re not calling it shower daddy because why you wanna shower with your dad
by i’m spongebob April 23, 2023
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