Season 1: Saved by the Bell Episode 4: Fatal Distraction
Air date: Sept. 09, 1989
Zack bugs Jesse’s room to see whether Kelly is going to go to the big dance with him or Slater. Creepy? Absolutely. But when Kelly, Jesse, and Lisa find out, they devise a plan of their own that would totally work in reality — Kelly will go all Kathy Bates from Misery to make Zack not want to go to the dance with her.
Clearly, Zack thinks with his head and not his pecker, because he buys the ruse hook. One can only hope Kelly didn’t bring the moves in the above GIF to the dance.