On "Seinfeld", what did Jerry do that was a turn off to the Calvin Klein model?

In "Seinfeld," Jerry turned off the Calvin Klein model by appearing to pick his nose. The misunderstanding drives the episode "The Pick," in which Jerry dates Tia Van Camp, a model he met on an airplane.

Jerry insists that he was not actually picking his nose; he says he was scratching it. Tia, however, sees the gesture and interprets it as nose-picking, which immediately damages her attraction to him. Jerry becomes increasingly frustrated because the distinction between a scratch and a pick seems obvious to him but impossible to prove.

The episode turns this tiny social embarrassment into a larger comic investigation. Jerry tries to explain himself and even confronts Tia at the Calvin Klein office, but his attempts at clarification only make the situation more awkward. The title itself refers to the disputed gesture.

"The Pick" is also connected to the episode’s other storyline: Kramer believes Calvin Klein has appropriated his idea for an ocean-scented perfume. The episode originally aired during Season 4 of Seinfeld in 1993. The answer is sometimes shortened to “picking his nose,” but that is the canonical event as Tia understood it.