As Spanish is coming from Latin too, the meaning here is tail too.
Me and many people don't mind shouting at people who ignore the queue and they say "it's just a quick question", yeah right, ok, go on but ask first.
I hate when queueing and the one behind stands so close to you that you feel like if you have to push forward. I don't move just to see if s/he gives up. war for territory!!
OT: they say it's considered invasion of your personal room when they come closer than 25 cms.
/morning rant.