Bewitched (1964)

S4E14 My, What Big Ears You Have

Darrin plans to surprise Samantha with a rocking chair, but Endora mistakenly believes he’s involved with another woman, the saleslady from whom he made the final payment. To uncover his supposed infidelity, Endora casts a spell that causes Darrin's ears to enlarge whenever he tells a lie. As he fabricates excuses about the surprise, his ears keep growing. Eventually, Darrin confesses the truth: he bought the rocking chair for Samantha and has been storing it in the Kravitzes' garage to keep it a secret.