Not only will the "Horns Down" gesture on the football field likely be punishable by a 15-yard penalty, but it might also cost you a notable singing gig.
The NCAA confirmed to ESPN's Dave Wilson that Zach Collier was denied the opportunity to perform the national anthem at the men's College World Series because he did the Horns Down before a women's College World Series softball game between Texas and Oklahoma State:
"The performance of the national anthem during NCAA championship events is a solemn moment for reflection and mutual respect for all championship participants and fans in attendance.