n. When one person takes/hogs attention so no other people can use/wield the power of other's attention
v. The act of being an attention hog, hogging attention.
Attention Hogging is also used to not only get attention but try and get attention from the person you like. The worst kind of attention hog is one who steals other peoples jokes.
n. "Dude, you've been such an attention hog all period."
v. "Hey man, you are definitely attention hogging her attention."