Pete is aware that Mindy’s Gramps was a minor league pitcher right? More importantly Mindy definitely knows this. So either she is under the false notion that this carnie game is easy because Gramps was good at it, or she really gets off on the idea of humiliating Pete.
Because the look that she’s giving Pete in the last panel lets us know in no uncertain terms that she finds something about this situation arousing. Does she imagine that the pasty, spaghetti-armed lifelong desk drone Pete has the potential to ever live up to the coarse masculinity of her baseball playing, war veteran, deathless Gramps?
She’s got Pete by the ball. The unnaturally tiny, pure white, vibrating ball.