[Billy grins immediately and leans in again, reaching out to take Teddy's hand and get a closer look. He looks incredibly pleased - both with the results and himself - to see that it worked just as planned.]

Oh my god, it works even better on you! I was testing it in sims and on sticks... anyway, it's enchanted. It should grow and shrink whenever you do, assuming you don't get too big. So, uh, fair warning in case you're going to turn your hand into a frying pan or something.