Jerry accidentally drops his girlfriend's toothbrush in the toilet and she uses it before he can tell her about it. Not wanting to tell her the truth, Jerry tries to sterilize her mouth and refuses to kiss her. Once he finally tells her, she drops something of his in the toilet and won't tell him what it is, sending Jerry into a frenzy. Meanwhile, Kramer adopts a highway and spends his time keeping it spotless. He starts to think that the lanes are too narrow, so he covers the current lines with black paint. Elaine tries to order Chinese, but the restaurant won't deliver to her side of the street so she finds another way to get the food.