It should not move anywhere, except at the tailgate. However, the hose could be moved from working under the hood between the washer pump and the firewall. I suppose it could also get kicked or moved inside the firewall near the passenger kick panel. It bends and moves every time you open the tailgate, mine broke where it goes into the roof panel.
I really like the
@Hamfisted posted of using a vacuum pump. Try pulling a bit of vacuum pressure on it and then hit the switch for the washer pump.
Mine had stopped recently for some reason. I didn't really care I pretty much never use it, but this thread got me to thinking about it again. I just hit the switch for like 15-20 seconds and washer fluid started flowing out the rear jet again.