The medical phenomenon of a woman gaining the ability of being able to bear and give birth to twins after being fisted. It is widely accepted in medical circles that woman who have not been fisted previously cannot fall pregnant with twins
"Did you hear Sophie had twins?" "well u know what they say a fist in the bush is worth two in the cradle".
by Learners scholar August 10, 2017

Sheets of sacrificial toilet paper placed across the water in a public toilet to stop the water splashing up onto your ass
by Marc Wins November 25, 2022

When your penis is large enough to be tucked under your balls thus looking like your penis is holding your balls in a basket
Shane: Hey look at my penis it totally makes a St. Mary's Cradle .
Thomas: Put it away you fool, there are women here!
Thomas: Put it away you fool, there are women here!
by Crazy fish May 5, 2014

by qponthedefinition August 1, 2016

Like Poseidon’s Kiss, but instead your girlfriend wiped after peeing and is too lazy to throw the tissue backwards, so when you sit down for a poo, your junk rests in tissue paper stranded on the front of the bowl.
Et tu, Amanda?! I put the seat down every time for you! Don’t you know Ursula’s Cradle affects us both?!
by Enigmatknician April 30, 2023

The lower section of the vagina that always seems to catch the residual jizz before it hits the bed.
I cream-pied this bird last night but there must have been too much jizz cos some of it spilled out ending up in the sperm cradle
by cjstoney January 16, 2011
