Big Breasts Even Bigger

"What are you gonna make bigger?" Karyn asked. Jon thought about that, then pointed the device at Karyn's breasts and pulled the trigger. Her already too big breasts grew even *larger* until they were twice the size. "Jon! What the hell did you do *that* for? I can barely move around with these melons!" "I just wanted to see how it worked. And man, did it *work*." "Just reverse it, okay?" "I don't know," he said, playing with her. "I think you look better this way." Karyn huffed. "You're really sick, Jon. Just change me back." When he didn't, she maneuvered over to him and grabbed the device from him. "Hey! What are you doing?" Jon asked. Karyn pointed the device at him and pulled the trigger. But what part of Jon's body did she aim at?