Austin Powers: The Spy Who Shagged Me. - 2 Cookies - 1 Cookie = 0 Cookies
When Number Two reaches for a cookie Mini-Me rushes across the table and takes to cookie before Number Two can. There were two cookies on the plate but in the next shot the are none.
He did take both of them. Even if he didn't, don't you think the other guy would of taken the other one? He's not going to reach for a cookie, not get it, and then not reach for the other one.