When the sun goes down, Mike Zimmer turns into a party animal, apparently.
During Kenny Chesney's concert at U.S. Bank Stadium on Saturday night, the head coach of the Vikings gave fans the good stuff with an impromptu on-stage appearance during an encore to Chesney's "She Thinks My Tractor's Sexy."
Zimmer then stole the show by getting the entire crowd to do the Vikings' Skol! chant.
A few of the 48,000-plus Chesney fans in attendance caught part of it on video.