I always loved that commercial!
Twas a good one :~D
Tweek followed me into the barn when I went out to feed breakfast, and she was 'xplorin' around... she's been spending a lot of time out there during the day when the horses are out, I've seen her coming in and out of there.
So when I opened the lid of the grain bin, Cyn let out this big low "Muhuhuhuhuhuh" and Tweek just hit the deck! Flat cat! She was looking all around for what might have made a growl like that, but she was looking in her little low world.... she didn't look "up".