<human>:  How do I fix a stuck zipper?
<bot>: Start by checking to see if the zipper is actually stuck, or if it's just partially unzipped. If it's stuck, try to gently separate the teeth of the zipper with a small tool such as a pencil eraser. If it still won't budge, try lubricating the zipper with something like petroleum jelly or wax. If the zipper is still stuck, it might be time to replace it.