Most of what he's saying is muggle rubbish, but Draco understands 'employee' and 'maintenance' well enough to draw his own conclusions. His father told him about how muggles have janitors, which are little more than house elves who have the temerity to expect payment. And he touched him! Disgusting.

He's in the process of striding magnificently away when the muggle janitor calls him a smelly human, and that--that cannot stand. He may not technically be completely human, but he smells nothing short of delightful, thank you very much. Draco freezes in his tracks, then slowly wheels about to glare daggers at the man. "How dare you," he snarls. "You're nothing but a muggle servant, and I am from one of the greatest wizarding families in all of Britain!"

He'll show him. Draco starts checking his pockets. His wand must be in here somewhere. "Just you wait," he says as he pats at his thighs. "As soon as I find my wand, you are in for a world of pain."