This is an incredible story told by David Lee Roth about the reason why brown M&M’s were banned backstage during their tours. It turns out that the reason was to make sure promoters were reading through the entire contract so that there would be no hiccups and accidents during the show. If a brown M&M was found, it meant the promoter hadn’t read through every single part of the contract and thus there was probably something going wrong somewhere on stage/set. Wonderfully sinister plan by Van Halen, but hey, it worked and I bet they made some money off of it from a few shows.