Instant Krama’s Gonna Get You, Gonna Knock You Right in the Head

In "the Pitch" Newman invokes the concept of Karma to Kramer—after which Jerry says, “Karma, Krama’?”—because Kramer has swindled Newman for a helmet in exchange for a faulty radar detector which fails to save Newman a speeding ticket.  This is ironic because Jerry warned Kramer that the radar detector was worth significantly more than the helmet, but Newman would not allow Kramer to “renege” after hearing this advice, thus Newman had already put the bad Karma ball in his own court.  Luckily Kramer is wearing this helmet when Crazy Joe Devola kicks him in the head.