Exetior accidentally drinks a potion that makes you become a child for an entire day, which was the potion Tails created. Well, Exetior (still in Sonic's body), at 7:00, he accidentally drinks it, and after two minutes, he becomes a child.

Tails enters the laboratory and doesn't find the potion.

Tails: "WHO DRINKED THE POTION?!"

A small dark blue hedgehog (It's Exetior in Sonic's body) was hiding, scared under Tails' desk.