Nate's mom asked "Hey Nate, can you go get some groceries for us? I'd go but we're having some... body issues..."
"Sure!" Nate said "Just text me what you need and I'll go grab some." Nate got ready to go outside. He had his wallet with his personal funds and a "emergency/errand" credit card. His phone... house keys... and the reality altering remote. With his testing he gave himself an otter tail that no one seemed to care, and was able to mess with his mom and dad's sexes in a few ways without them caring that much... Welp the grocery store was a few minutes away and the 16 year old dude didn't have his drivers license yet so... One press of the button later and more than just the rear seems of his pants got shredded as Nate spontaneously became a centaur... With an otter tail... Nate trotted around for a bit getting used to being half horse, but was able to get some speed relatively quickly. It was more tiring than Nate expected, although he guessed he just got the body of a horse for his legs and not super muscles or whatever. Still it did make his trip go from being a few minute to being maybe 2 minutes. Getting inside the grocery store was... another issue. Turns out that the automated doors weren't made for someone as high or as big as a Centaur... Nate once thought about turning back to human, but after realizing the clothing issue... he just shrunk himself so now he was more like a pony around just a few inches taller than the average human. Nate then took a basket, I mean what did his mom think he was a beast of burden?... Did she know he was a centaur? Still fine time to grab some things for dinner... and maybe play around with the remote a bit.