Deadheading out of JFK just reminded me how much I hate JFK. The ramp got all screwed up because there was a plane change so they had to move bags from one plane to another. So paper work went out about 45 min late then the fun started. The FA was closing the door and one of the guys on the ramp told her to stop. They needed to give them a new bag count(paper work is gone already). Well a group of 4 guys got together to figure out the bag count and nobody knew the new count. 15 min later the captain in the jumpseat told them to copy the numbers from the paper work and we left. Wasted 15 min for no reason.