An arrogant person with no soul. Voldfaces believe they know everything and will be quick point out you why you are wrong. Nevermind that you are right.
Me: Gosh I have a headache.
VF: No you don't. Headaches don't occur at the level of atmospheric pressure found at this particular longitude and elevation.
Me: Excuse me. You are a voldface. I think you need a social life.
A term frequently used to describe an unfriendly, dirty-minded computer science major who thinks he knows more than you because he spends his time hacking your computer from a poorly-lit room.
"How does that awkward guy know my dog's name and my bra size?? What a voldface!"