Your clothes expand to fit your fatter frame as you make the wish. You remember that you have to go over to Lindsay's house soon to do a summer report on the medieval feudal system for you honors history class. You ring the doorbell and Lindsay greets you, still in her uniform,"I brought some burgers from work."
She let you in and you began to do some research as you take large bites out of your burgers. You scroll through a Wikipedia page and Lindsay looks at you strangely. "You look different." she said.
You replied, "I've been bulking up lately. I can't find any new info, do you want to look for a little bit?"
You retreated from the computer back to the table to grab another burger. As you take the first bite you come up with an idea to make the project easier. You could use the Wishing Powder to go back to the dark ages to get a better view on the topic with some first hand experience.