this teddy bear would make you forget your troubles - and give you the munchies

This would have been an interesting find in a toy store.

I have to say, that's a pretty smart idea to use someone else's address as the return address, but if you're sending that kind of thing clandestinely in the mail, you think you'd check to make sure there's enough postage, wouldn't you? Insufficient postage is the only reason I can think of why the package was returned to the "sender" rather than delivered to the addressee, even though the story doesn't mention that's what happened.

I do expect, however, that the intended recipient of the package is going to get a visit about the package.