Kramer and Jerry are not pleased with the new “low-flow” shower heads that the building’s maintenance department has installed. Elaine is surprised to find out that opium was present in the urine sample she gave at her physical in preparation for her trip to Kenya. Mr. Peterman, once an opium addict himself, tells Elaine that she will not be able to accompany him to Africa after all. Kramer goes to Elaine’s office to ask her if he can use her shower, and is mistaken by Peterman as a drug addict when Kramer begs for the “good stuff”. Jerry is frustrated by the fact that his parents aren’t moving back to Florida and George is elated because his parents are considering moving to Florida. George’s parents decide to go to annoy the Seinfelds, seeing the Seinfelds’ conviction that there are no available condos in Del Boca Vista as a challenge; this scene alludes to the episode The Maestro, wherein Jerry and Kramer attempted to prove that there were indeed available villas in Tuscany. However, the Seinfelds find out and decide to stay, causing the Costanzas to stay.
Jerry’s Uncle Leo complains about an overcooked hamburger and says the cook is anti-Semitic, which Jerry jokes about on The Tonight Show. Leo’s girlfriend laughs at this, Leo calls her anti-Semitic, and they break up. Elaine discovers her opium results were from her eating poppy seed muffins. After she is about to retake the test and believes she accidentally ate poppy seeds in a chicken dinner, and still desperate to go to Africa, she asks Jerry’s mom to take a urine sample for her. Elaine is later shocked to find that the urine sample proved that Jerry’s mom has osteoporosis and is menopausal.
Kramer and Newman track down new shower heads from a shadowy Serb selling them from a van in much the same manner as guns. The one Kramer buys is actually for washing elephants at the circus, and the pressure is too high as a result, causing him to be knocked out of the shower by the spray.