soap off 

The act of jerking off with soap in the shower. ( My boyfriend and I were enjoying some shower fun and I started soaping his junk for him and I said "I'm soaping you off" and it stuck.

I helped my boyfriend soap off in the shower

soap off by Freakyqueen May 3, 2018

Beating off with camp soap 

What causes your roomate to have to go to the dermatologist becase his penis almost fell off.

Bobby, you should not beat off with that camp soap.

Beating off with camp soap by tha ingram July 2, 2004