The Smurfs (1981)

S4E37 The Whole Smurf And Nothing But The Smurf

When Gargamel puts a spell on Smurfette that forces her to lie, her knack for conversation spirals into chaos. Her once charming chatter turns into a series of misunderstandings and mishaps, creating turmoil in the Smurf village. As her friends struggle to cope with her falsehoods, they must find a way to break the spell before things get completely out of hand.