Seinfeld (1989)

S2E9 The Deal

Late one night, Jerry and Elaine are glued to the TV when they come across a show featuring "naked people." This sparks a conversation about the possibility of having a romantic relationship without damaging their friendship. George, however, insists it’s impossible. Undeterred, Jerry and Elaine come up with a "system" to navigate this uncharted territory. Complications arise when Elaine's birthday approaches, throwing their plan into disarray.