Used commonly by modern day teens, kelsoff refers to the physical reference of male self-ejaculation. Kelsoff is pronounced similarly to Jack-off and has a similar meaning.
"I'm so bored right now, I can just stand here and kelsoff."
"The boy who kelsoffed during the day became tired but satisfied."
"The boy who kelsoffed during the day became tired but satisfied."
by Greenbrier News February 28, 2010