In what Seinfeld episode does Jerry unintentionally cause a young wannabe-comedian to start swearing?

When Jerry, Elaine, George, and Newman discover the deliciousness of a new frozen yogurt shop, Jerry blurts out that it "is so f*%#&!@ good" near the shop owner's wannabe-comedian son Matthew. This in turn causes Matthew to start swearing relentlessly.

Asked by Rachel Bortles · Last updated 5 years ago · 1.3K views · SOURCE