GLASSES SEE BEHIND YOU

You're walking down the street at night and you hear something moving behind you. You're sure it's a werewolf, but you know if you turn your head it will maul you. Well, these See Behind You Glasses have mirrors on the inside of the lens that let you see what's going on behind you at all times. Great for casing out joints, seeing who is approaching your cubicle and watching out for ninjas.