Reverting to childhood speech for plausible deniability.
Must have been the cats.
These cats do.
The cookie fairy then.
Yes, there is. When she fails to pick up teeth, she steals cookies.
Have you interrogated the usual suspects?
The cookie monster, Santa,...Dobby!!!
Crumbs? What crumbs?
But, I'm grounded! That's not fair.
Fiiiiiiiine, I'll pick up some flour...and butter...and what?
Right after I lie down for a bit; my tummy hurts.
That's not funny.