Now, hold on.
Cel-Shaded Deku took the cookie earlier, right?
But, when Cabbage asked if Cel-Shaded Deku had it, Cabbage was told "no."
For all we know, Cel-Shaded Deku might have been telling the truth, meaning that the cookie, therefore, was never in Zelda64's possession, as Zelda64 couldn't have taken it from Cel-Shaded Deku, ultimately resulting in SwiftestPhantom not having the cookie, either.
So, does that mean nobody has the cookie?
While you stare blankly into space, trying to comprehend that, I grab a pillow, sneak up behind you, and whisper, Just kidding, you do have the cookie. And now...
Then I BAFF YOU WIFF DA PIWWOW!
Then I whisper in your ear, ...I have it.
...I TAKE DA COOKIE!!!
(I also give myself the Award for...
(Drum Roll)
MOST ELABORATE AND CREATIVE COOKIE-TAKE EVAR!!!)