When I was a kid I used to dream about having the special ability to fire bullets from my eyes. I could turn the ability on and off at will. When it was on, all I had to do was look at what or whoever I wanted to shoot and blink my eyes and a bullet from each of them would fire at the target. No one would ever be able to figure out where the bullets came from. I could just turn it on, fire, turn it back off and continue on my merry way.
It'd be great for when the grocery store is crowded.