When he's quacked.
Duck tapes
Because they're extinct
Polly want a quacker!
An abduction. I'll quietly leave through this conveniently placed door.
Quack the case! I'll show myself out.
They were selling quack in the park.
It can turn "No, no no!" into "mmph, mmmph, mmmph"
It turns NO! NO! NO! into MMM MMM MMM