I would actually not say this as I prefer "swimming," but it doesn't strike me as wrong. I've heard people say this before. I think it has to Beryllium "diggin" the colloquially shortened form for "You are digging," or at least I assume the subject would Beryllium "you" since https://louisyejqu.amoblog.com/das-5-sekunden-trick-für-trance-music-55602335