The note template "From the desk of Dr. Gnash" simply explained that the person in question needed to be excused for his or her tardiness after rooting the Predators to a win. Symptoms included loss of voice, exhaustion, extreme elation and "inablity to focus on anything other than Predators hockey."
Gnash's medical credentials are suspect at best, but, hey, anything to help out fired up Predators fans can't hurt.