Urusei Yatsura S01 E20 Pitter-Patter Christmas Eve (2)

"Grab her horns and she might just become your darling!"

Megane and Lum's Stormtroopers set up a plot to embarrass Ataru and get Lum to leave him at the same time. They set up a date who will make a fool of Ataru, but Lum finds out and twists things around.