Don't stand so close to me in line.

Have you ever noticed that when you're waiting in line, sometimes, someone will stand so close behind you that you can "feel" their presence?  I need a couple of feet of personal space around me.  If you stand within that zone, you're gonna get a dirty look.  Or, I'll "accidentally" bump in to you to give you the hint that you're to close.

If I don't know you, I don't want to feel you, I don't want to smell you, I don't want to know that if I move an inch, I'll be brushing up against you.  Keep your distance.  You're not getting any closer to the front of the line by standing so close to me.