throw some shit down
a non-gross sounding term to define masturbation/"jerking off"/"busting a nut"/idek what else but all of these terms sound gross, with just the syntax
"She had the place to herself all day and was just trying to throw some shit down when her roommate unexpectedly knocked loudly on the door."
"My ex always tried to tell me how often I should throw some shit down...that's why I broke up with them."
"My ex always tried to tell me how often I should throw some shit down...that's why I broke up with them."