According to the "Question of the Day" during a local TV newscast, it is the handle on a gas pump.
Funny, I thought mythbusters said it was your toothbrush...
TV remote in a hotel room.
Pretty sure Mythbusters said the dreaded Kitchen Sponge, but that was before there was a Model S, so maybe my recollection is fuzzy.
I'd say its the bills in my wallet. But, thanks to my S, I don't have to handle those as much either.
I heard it was the little container of toothpicks at the counter of a restaurant (because they are never cleaned, just restocked).