One of the best things about Marcus is his laugh. He still laughs like a child, with a completely unconscious, utterly contagious hilarity. He giggles and chortles. The first time he saw the Stay-Puff Marshmallow Man in "Ghostbusters" he laughed and laughed and laughed, tears streaming, clutching his stomach, the whole thing.

The other day he came across the word "Scheisse!" in something he was reading in the car and asked Matt what it meant and Matt said it meant "poop." Marcus cracked up. Then Matt, being Matt, pointed out that it is fun to swear in German because it sounds so good, and another good swear would might be "Scheinhund!" Marcus cracked up again. He came home yelling from the top of the stairs, "Rabbit! Rabbit! Scheisse! Schweinhund! Shleisshun! Scheinsche! Poop! Pig-dog!" amid gales of laughter, staggering around drunkenly. He had just managed to calm down by the time he was half way through his snack about ten minutes later when Matt walked up behind him, leaned over and (in falsetto) yelled "Schweinhund!!!" Marcus promptly snorted milk out his nose and all over the floor.