"This is my latest disguise," announces Tertius, marching into the living room. "What am I?"
I check him over. Bright red fire department slicker, bright red fire department sou'wester.
"You're a firefighter," I hazard. He grins.
"No, I said it was a disguise," he crows, and whips off the two items to reveal that underneath, he's wearing the chain mail of a medieval knight. Daddy got fooled again.