Showerbate 

The Act of furious Masturbating during a shower

Damn Showerbating isnt funny anymore

Showerbate by Wilitus July 29, 2005

Showerbate 

When one masturbates in the shower

I love to showerbate in cold water

Showerbate by triangle_boy June 24, 2011

Showerbate 

When one goes to take a shower with the intention of both showering for the sake of showering, and also using the opportunity to masturbate.

Dude, I could hear Josh in there. He totally ditched us to showerbate.

Showerbate by Xiwt June 21, 2012

Showerbate 

When you masturbate while taking a shower.

Jimmy showerbated while taking a warm shower.

Showerbate by haha. k. March 28, 2015

showerboat 

A combination of a female receiving a golden shower from one person (male) while a second person (male) is motorboating her.

Also known as a Montreal shower boat

Unfortunately, Grace was not up for some showerboating last night.

showerboat by J VanderSnoogen September 2, 2011

showerbation 

The act of masterbation in the shower or bath.

Chris was showerbating, so it took him forever to get ready.

showerbation by Shmoblar August 26, 2005

showurnate 

The act of urinating in the shower. Results in what are quite possibly the most relaxing moments that any of us will ever experience.

"Dude, I showurnated this morning and almost fell asleep standing up."

showurnate by razer May 30, 2005