The origin of the term is that thing a girl does when she's plucking her eyebrows where she switches back and forth trying to get things even, but accidentally takes too much off EVERY time until there is no eyebrow left.
Despite the origin, this term applies to haircuts, makeup, and even external things the girl does.
Jer: Your hair looks fine woman, stop eyebrowing!
Rosey: No wait, I'm almost done, my hair is uneven!
Jer: You are such an eyebrower!
A trip to a grocery store, convenience store, or gas station for the sole purpose of buying an excessive amount of junk food and sugary drinks, usually with friends. A chud run often happens late at night and ends with everyone involved hating themselves afterwards.