Top definition
When a dude decorates his dick as a German U-31 class u-boat, and inserts a projectile, such as a nerf dart, into his urethra, so that when he climaxes into his partner, the projectile will be launched into his choice of holes.
Iā€™m searching for a partner to perform the Urethral U-Boat on.
by VyXious January 12, 2018
Get the mug
Get a Urethral U-Boat mug for your father-in-law Manley.