GRAMP (in bathrobe): Hey, where's your duck? He didn't come home last night. SHELDON: He didn't?
GRAMP (in bathrobe): Nope. His bed's still made... the espresso machine is still clean... there are no feathers in the sink... there's no trail of spilled Cap'n Crunch on the floor... and the toaster isn't covered in crumbs.
SHELDON: Sheesh. He's a little whirlwind of morning destruction, isn't he? GRAMP (in bathrobe): ...And I'm fairly sure that - YEP - all the cash is still in my wallet...