Behind that smiling mug is a serious man.
At night, deep in the bowels of his restless nights, questioning Homer and Jung and Ayn Rand, he probably shows his true self. Inward and serious and introspective. His studies in ethical philosophy and Renaissance dance theory, too, are just fronts for his brooding and intellectual side.
You go, Marcus. Be happy and keep performing like the Pro Bowler you are or should be. The lockerroom has long needed a more relaxed and playful side. God bless you and your effete friends.