Name that TV commercial you can't get out of your head

UPDATE: Sources tell me that the toy might have been named "Tumblina," which makes sense, since she rolls over. Wasn't Thumbelina some fairy tale thing?

So, I was making dinner and had, for God knows what reason, this TV commercial going through my head:

Thumbalina, she really turns over!
Thumbalina, she really turns over!
Hold her head (hand?), roll over on her back
and hold her arms right out to you.

What bad TV commercial from your childhood is still haunting you?