DD says it whenever she drops something, so it's quite a bit.

But last night, she kept saying it over and over while in the living room. After about 20 seconds, we look over and realized she's pointing to the dog puke on the floor that had gone unnoticed (how embarrassing!). She runs over to the kitchen, grabs her dustpan and broom (all while continuing to say "Uh Oh"), brings it over to the puke and tries to clean it up.

DH was faster and threw the paper towels and carpet cleaner to me before she could get back. Then she wanted to help me clean the carpet.

I was speechless that she knew to clean it up!! I guess I'll be listening to her "Uh Oh" more closely next time