"Invisible" People

As I've gone through life, I've found that certain people believe themselves to be invisible.  Their superpower is activated simply by not making eye contact with you.  Here are some examples:

• The Invisible Pedestrian - Yeah, yeah, they always have the right of way.  Whatever.  You'll probably come across the Invisible Pedestrian as you're driving through a parking lot.  They'll cross in front of you, without even waiting to see if you're going to stop.  Here's where the power kicks in: as long as they don't look at you, you can't see them!  They can take as long as they want, and have as many drooling children dragging along behind them, and it doesn't matter.
• The Invisible Grocery Shopper - You've finished getting all of your foods and you're ready to check out.  You've already done mathematical calculations as to which check out line will be the fastest.  You pick Register 4, and begin making your way over.  All of a sudden, here comes the Invisible Grocery Shopper from out of nowhere.  They slide into Register 4 right as you were about to step in line.  BAM POW ZAP! Even though you're close enough to them to smell their gouda, they don't look at you so YOU CAN'T SEE THEM!!  See also: Invisible Starbucks Customer
• The Invisible Employee - This one is pretty common.  You're at a store and you decide that you just cannot complete your tasks without some help.  You begin scanning your surroundings for someone that looks like they possibly know what's going on. (Note: This can be ultra tricky at Target.  Do not just approach anyone wearing red.)  You find what you believe to be an employee and begin approaching them.  Along with their invisibility, the Invisible Employee can also sense your hesitation about his/her employment there.  So instead of looking up from stocking or filing or picking their nose, they simply ignore you.  Now you're thinking, "I guess they don't work here!" and the cycle continues as you try to find someone else.  Unfortunately, most retail stores are made up of an entire army of Invisible Employees.  Good luck, and Godspeed.