I think it was on channel 4 while I was watching How I Met Your Mother the other night. It's a cartoon like all Red Bull commercials, and there's a ravine with a teepee on either side of it. Running Bear and Little White Dove send each other smoke signals of their longing for each other, and then they drink Red Bull and fly out to meet each other over the ravine. It makes me smile every time I see it lol.
