1. They hate bright lights, especially sunlight, because it can kill them. 2. Keep yours away from water. Don’t give it any to drink, and don’t give it a bath. 3. Don’t ever feed it after midnight. If anyone should understand the importance of those edicts it’s Billy Peltzer. He first received Gizmo as a Christmas gift in 1984. You’d think he’d have his act together after more than 36 years. But a new commercial shows he’s just as careless with his adorable little pet as ever. Because it turns out there’s a fourth rule to owning a Mogwai: don’t give it a large bottle of soda either.