A cum rag, or a piece of soft cloth either made into a condom like object to masturbate into, or to clean up the semen afterwards. Saves trees by eliminating paper waste, and keeps the Kleenex Fibers from sticking to your region of self ejaculation, but smells bad and may be hard to hide.
Friend A: "Hey dude, I need a writing utensil."
Friend B: "I'm busy check that drawer."
As Friend A proceeds to a drawer, Friend B looks up
Friend B: "NO! That's where I keep my Louisiana Dish Towel!"
Friend A: "Oh jeez, sorry..."