Diet Mountain Dew “Done That” [00:30]# A series of fund activities such as parachuting, going down a waterfall on a surfboard, etc, is interjected with a group of jaded young man who’ve done it all. “Did it. Done it. Am doing it tomorrow,” are their comments on each of these high-adrenaline sports. The only thing they’ve “never done.” Is Diet Mountain Dew. Once they have, however, they admit to really liking it.