When Bertram thinks he's merely practicing his speech to Sugarpuss on why he loves her, but she can hear every word.
Sugarpuss telling Joe why she loves Bertram:
Sugarpuss: Yes, I love him. I love those hick shirts he wears with the boiled cuffs and the way he always has his vest buttoned wrong. Looks like a giraffe, and I love him. I love him because he's the kind of a guy that gets drunk on a glass of buttermilk, and I love the way he blushes right up over his ears. Love him because he doesn't know how to kiss, the jerk!