Keeping Eric in mind, you kissed the ring, focusing on his muscled arms. You sit there with your eyes closed for a few minutes, then open them. You didn't feel a thing, but why would you? Magic isn't real. You go to take the ring off your finger, and as you do, your eyes travel from your hand to your arms.
They're huge. They're Eric's. You stand up and walk over to the mirror, very excited. You're not an expert when it comes to muscles, but you look like you should be a professional wrestler or something. Your arms look huge on your body and feel heavier than usual when you relax them, but when you flex you feel raw power. Your shirtsleeves rip a little as you do, and you get your shirt off with a little trouble. You're interested to see that the tattoos that are usually on Eric's arms aren't there as you inspect them. And they're probably a little smaller than usual on your shorter frame, but the effect is still dramatic. It looks a little off as you inspect yourself in the mirror.
That isn't the only thing that looks off though. You were so focused on your arms, that when you look at your own face in the mirror, you realize you inherited something else. Your hair, which is usually short and combed up, has a huge patch missing. The parts that are still there are the same length and color, but the top of your head is completely bare. There's a horseshoe of hair that looks way too long now. Your stomach sinks a bit. You felt like a stud a few seconds ago, and now you look like a weirdo.
You definitely want to switch back, so you kiss the ring and think of getting your regular head of hair back from Eric. But when you look in the mirror, you look the same. The packaging... now you remember it said that this would only work once a day. You'll have to wait till tomorrow.