For more detail, it's "The Package" episode, Season 8, Episode 5 https://en.wikipedia.org/wiki/The_Package_(Seinfeld)

It's also the episode with the "boudoir" photographs of George taken by Kramer, for the benefit of the photo development clerk, who he thinks slipped in a suggestive photo of herself in the photos she gave him of his last roll of film. You may have seen the images of George posing before even if you're not a Seinfeld fan. It's a pretty memetic set of images. People have done oil paintings of them, lol. Here's a screenshot example (mildly NSFW, male in only boxer shorts): http://www.inpapasbasement.com/wp-content/uploads/2011/03/Ge...