When two people people, most like stoners, come to a general understanding that they will smoke and then bone each other. can be a term used with friends with benefits or simply with your girlfriend or boyfriend.
"Stonebone tonight?"
"Hell ya, you bring the blunt, and I got the condom".
A Type of Handjob involving the person giving the handjob glueing multiple rocks to their hands to inflict more pain and stimulate their partner in that manner
"My Girlfriend gave me the best stonejob...but now my dick hurts."
"The best rocks to use for stonejobs are small pebbles."