Technically Extortion

Karyn flourished the wishing stone. "This," she said. "I wish that whenever I ask Jon for the ray gun he would hand me the ray gun immediately, without trying to use it first." "What did you do that for?" Jon asked. "It's just insurance, Jon," Karyn smirked, "nothing personal. Now if you try to mess with me, I can just take the ray gun out of your hands and return the favour. So don't mess with me." Jon shrugged and shook his head. "Fine, fine, whatever." Karyn held the gun towards him. "Now fix me, please."