“Breaking Bad” sleuths are hard at work trying to work out why former co-stars Bryan Cranston and Aaron Paul posted the same picture of two donkeys on their respective Twitter and Instagram feeds.

Fans might assume the donkeys, or mules, may be a drug reference – as the show centered around the world of selling methamphetamine.

Maybe it has to do with the rumored “Breaking Bad” movie that might follow the events of Paul’s character Jessie Pinkman after the series finale. Anyone that watched the show knows there is plenty of meat on that bone to explore.

Or, and follow me here, or maybe – they are playing donkeys in an upcoming buddy film about the zombie apocalypse.

The point is, “Breaking Bad” fans should be getting excited. Why? Who knows! The “Breaking Bad” universe (outside of Better Call Saul) might be moving forward.