<human>:  How do I fix a jammed zipper?
<bot>: To fix a jammed zipper, start by gently wiggling the slider back and forth to loosen it up. If that doesn't work, you may need to use a pin, paper clip, or other small object to get the stuck zipper teeth apart. After the teeth are free, use a heavy lubricant like graphite to help the zipper glide more smoothly. Also be sure to clean the zipper periodically to remove any build up from dirt or dust.