after declining to have sex with a guy you're hooking-up with, giving him a handjob so he doesn't get blue balls
Craig: Yo dude, I hooked-up with this chick last night.
Craig's friend: Nice dude, how was it.
Craig: Terrible, man. She wasn't down for sex, and I couldn't even cop a courtesy jerk.
Craig's friend: Damn dude, your balls must be heavy as boulders now.