In a five-second ad that ran during the Super Bowl, language learning app Duolingo shocked, confused, and delighted audiences who watched the brand mascot’s rear end expand and explode into a smaller green owl. Duolingo’s message behind the bizarre spot was for users to do their daily lessons, “no butts about it.” While it may have puzzled viewers, prompting some to scour the internet to figure out the meaning, some were already in on the BBL (Brazilian butt lift) joke. Either way, the brand managed to make a splash in…