Based on a conversation with my drunk father...

[shepteldan]

W-If I ever see a hologram I'll stab it in the eye! Damn space age assassin.
S-What the hell are you talking about? A hologram is a laser-generated image with three-dimensional properties. So you can't even touch a hologram. It's not made of matter. And you certainly can't stab it in the eye. I think you've had a little too much to drink.
W-Don't tell me what I can and cannot do! Are you a hologram?