Magical Diet

The following is a reconstructed conversation between plasticann & Adam.

plasticann: Guess what? I magically lost 10 pounds. I'm not sure how, but I weight a lot less all of a sudden.
Adam: That's odd!
plasticann: [dashing to the bathroom] Wait, I'm going to go weigh myself right now.
plasticann: [yelling from the bathroom] Yup, I weight a lot less for some reason. Hmmm, maybe the scale broke. [stepping of the scale] Oops, the scale's not calibrated correctly, it doesn't go back to zero when I get off. Just kidding, I didn't lose or gain any weight.
Adam: Why don't you fix?
plasticann: Can't we just do the mental math when we use it?
Adam: [no response]

If you want to weigh less, use our scale.