?MOONLIGHT SHADOW? by Cute Kitten   ?MEET SAM?   Let the padded times roll.    That was Sam’s plan for Mardi Gras in New Orleans, anyway. Was being the operative word. What better place to be diapered under his clothes and go unnoticed than in a big crowd of drunken revelers? Fat Tuesday was the last big hurrah of the Carnival season, everyone in costumes, plastic beads and confetti everywhere, getting their last kicks and indulgences in before dawn brought som