hydroseeder 

Someone who masterbates in the shower.

He was a classic hydroseeder and he sprayed his seeds upon the shower wall with groaning glee

hydroseeder by FatdogTavern March 21, 2016

Hydrogender 

A person who’s gender may potentially shift when engaged amongst the act of bathing; subsequently, if the individuals stands beneath the flow of water for an extended duration of time invariably risks losing their present identity due to the immense amount of combined hydrogen and oxygen that arrives considering said hydrogender habitually evades the normal hygiene regiment of the average human in fear of negating their present gender identity without one’s own neurological consent. Pert Plus, unlike Suave or Dove may ward off unwanted shifts in masculine/feminine characteristics.

Hydrogenders are frequently found wiping their armpits with and without soap in Greyhound bus terminals.

Hydrogender by Uncle Slingo October 23, 2018

Hydroseeding 

Masterbating in the shower.

The new handheld showerhead that I bought makes hydroseeding in the shower wicked awesome!

Hydroseeding by FatdogTavern April 21, 2016

Hydroseeding 

To ejaculate onto a woman's back after fucking her doggy style, such that the semen forms perfectly aligned rows.

Girl 1: Have you noticed that there are 3 perfectly aligned stains on the back of your shirt?

Girl 2: Yeah, my boyfriend hydroseeded me.

Girl 1: Ah, hydroseeding, that explains it.

Hydroseeding by dd_slayer June 13, 2013