Passage: Shortly after they were taken off the U.S. market, the sponge was featured in an episode of the sitcom Seinfeld titled "The Sponge". In the episode, Elaine Benes conserves her remaining Today sponges by choosing to not have intercourse unless she is certain her partner is "sponge-worthy". This was later revisited in the series finale when the pharmacist testifies against Elaine and her morality for buying a whole case of the sponges.

Question: what did elaine benes want to make sure of before having intercourse with her partner?
her partner is "sponge-worthy"