Jerry's parents hire a personal trainer for him. However, the trainer is very old and ends up throwing out his back. Kramer begins stocking up on his own blood, but runs into refrigeration problems. George decides that if he could combine sex and food, he would have the perfect life. Elaine's friend thinks Elaine is too irresponsible to watch her son but tries to prove her friend wrong. But when babysitting is more than Elaine bargained for, she tries to show that she is irresponsible to get out of it.