Madden famously had three rules for his team, and three rules only.
1. Be on time.
2. Pay attention.
3. Play like hell.
The Panthers also have three rules, and three rules only.
The Mushroom Society was established several years ago by a group of professional offensive line coaches. The mushroom logo signifies the similarity between the "O-Line" coach and the fungus. Both are kept in the dark and fed garbage yet continue to flourish!