To shave multiple lines (usually two or three) through one's eyebrows to try and look hard.

Literally everyone, ever. Including the writer of this definition.

Updates to a program that completely break the code. This normally causes the code to work but in such a poor manner that it is unusable. Typically in the form of bug fixing.

This comes from the user Notch, the creator of Minecraft, who updated his game and created numerous bugs that make the game completely unplayable.