I Love Lucy S02 E13 Lucy Hires an English Tutor

"Vitameatavegamin - Spoon Your Way To Health!"

Lucy hires an English tutor so that Ricky won't give their yet-to-be-born baby bad speaking habits. The lessons are free, but Lucy does promise the tutor a payback: he'll get to sing at the Tropicana. Of course, Lucy neglects to tell Ricky this.