Second Hallmark card: Just knowing I can call you at four in the morning if I need to makes me not really need to.
5:43 seconds in: Calvin and Hobbs, hopping out of bed, Calvin says, "It's four in the morning! Let's see if Santa left our loot yet! Hobbs, holding a corner of the blanket in one paw, is still on top, other front paw balancing him on the pillow, smiling, says, "Oh boy!"