Jetturbating 

Using the jets of a pool, hot tub, or any similar structure to derive pleasure; effectively masturbating but removing the necessity of touching the genital region.

Kim: I walked in on Chad in the hot tub! He said he was just trying to clean his junk, but I could tell he was jetturbating.

Jetturbating by Craigglea August 26, 2012

jitterbating

The act of secret nervous masturbation before having sex with a girl to last longer - usually in her bathroom.

girl- Were you jitterbating while you were in there? because your dick seems to have lost its soul.

jitterbating by Sweek September 19, 2011

jeturbating

Masturbating with a jet in a bathtub, hot tub, or with a shower head.

My pulsating shower head is great for jeturbating.

jeturbating by klcoool December 18, 2015