Person who try to stuff massive amounts of luggage, bags, gifts, coats, and other crap in the overhead compartment of the airplane. The most egregious overhead-hog is one who attempts to put all of his/her stuff only in the overhead compartment above their own seat--even though that particular compartment might already be full.
"That obnoxious overhead-hog held up the line while trying to stuff a bunch of Christmas packages in the space above his seat. It was clear that the packages wouldn't fit!"
One fan's overreaction: "I never thought that anyone who would pay for subscription to this board would be fair weather fans...So for those of you who are not willing to support your team when they need you the most...all I can say is ...Please do not tell anyone you are real fans...and you can all go straight to HELL."