Seinfeld (1989 - 1998): The Blood

While hoarding his own blood at a blood bank, a rate increase causes Kramer to start storing it at home. And as Elaine is upset by a friend who doesn't consider her responsible enough to baby-sit, George can't keep thinking about food during sex. So while agreeing to experiment, his girlfriend Tara draws the line when George brings pastrami to bed. Undeterred, George then starts sneaking his snacks into the bedroom. Meanwhile, news that Vivian has asked Kramer to sit for little Jimmy angers Elaine.

Stopping Kramer on his way to the job, Elaine makes herself the substitute baby-sitter. But after finding Jimmy more than she bargained for, she worries that Vivian's medical problems may require her to baby-sit again. Meanwhile, after complaining about Kramer's using his refrigerator to store blood, Jerry is accidentally stabbed and given an emergency transfusion. As Jerry is coming to grips with being Kramer's blood brother, his parents hire the elderly Izzy Mandelbaum as his personal trainer \ one who's old fashioned gym and antiquated techniques cause him to worry.

As George fails to fool Tara when he tries adding TV to their sexual routine, Elaine can't convince Vivian that she's nowhere near responsible enough to care for Jimmy and asks George for help. But when George discovers that Vivian shares his passion for pastrami, Elaine gets off the hook when he agrees to take care of Jimmy himself. Meanwhile, when Kramer asks to use Jerry's car to store his blood, the engine accidentally overheats and he uses the blood to cool it off. And after he's injured when Izzy and his son toughen the workouts, Jerry finally begs to have Kramer's blood removed.

• Season 9, Episode 4: Promo