[throwaway3699]

Google gets enough DNS traffic that I doubt you could just sit on it for very long. Not without an expensive bill.

[101008]

But what if you just point to original Google DNS servers?

[jaywalk]

Not sure why you're getting downvoted. Setting the NS records to their original values would make the whole thing transparent unless you dug into the domain ownership.

[kuroguro]

Wouldn't most of it get cached downstream tho?