v. To whine excessively, purposely sabotage a good time, cause mishaps
adj. Being in a bad mood OR Acting mischeviously
n. Scapegoat for mishaps/unforseen problems
v. "Man, John was Grixing hard last night."
adj. "Why was Pete being so grixy last night?"
n. "Dude, The Grix tripped me just as I was walking over to that chair."