You are the strawhats "scientist" you always make potions, n stuff.. But you've made a mistake.. Instead of making a cure.. You've made a gender swapping potion..

You placed it on your desk.. And still thought it was a cure.. You left your office.. And went to the kitchen to eat.. But Luffy had to snoop around inside including with Usopp and Chopper..

The three saw the potion.. But Luffy thought it was food.. And of course drank the potion, and then Luffy became a girl..