Id this (cartoon?) scene

For some reason this scene is tickling the inside of my head. I THINK it is from a cartoon - at any rate, the female voice sounds very cartoon-y. It’s a guy saying something along the lines of “what’s the number one rule?” and a girl says “always listen to ___” with the blank being her own name. I realize this is next to nothing to go on, but I have high expectations from the Dope.

“what’s the number one rule?”

“always listen to Dot (or gladys or esther or whatever)”
And he nods along and agrees - always listen to whoever that random chick is. It may be him saying it and she nods along sagely- but the number one rule is listen to her - whoever she is. It may not be a cartoon, but she has an annoying voice - I think.
Any ideas, o teeming millions? It’s been bugging the crap outta me. Thanks in advance!

2009 animated movie, Ice Age 3
Buck says it, then later Manny mimics him using a squeaky voice.