"The Junior Mint" Season 4, Episode 21

Elaine's old boyfriend "the triangle artist" is in the hospital. Elaine, Jerry, and Kramer go to visit him and there Elaine sees he has lost a LOT of weight. Jerry and Kramer are invited to attend of viewing of the surgery. Kramer offers Jerry a junior mint, which Jerry rejects and inadvertently flings it into the patient. George hears about the artist's precarious situation and buys $1900 worth of his paintings.