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The Sponge is the ninth episode of the seventh season of Seinfeld, and the one hundred nineteenth episode overall.
Jerry finds the number of girl he wants to contact on Kramer's AIDS walk sponsor list. After finding out that her preferred method of birth control is only available in a limited supply, Elaine must decided whether her current boyfriend is worthy. George tells Susan the secret of the size of Jerry's jeans and that leads to a fight about all secrets, he tells her another of Jerry's secrets when they make up. Jerry finds out that George told Susan one of his secrets a now he's "out of the loop." Elaine adjusts her screening process to find worthy candidates. Kramer causes a disturbance at the AIDS walk when he won't "wear the ribbon."