n. - when you feel extremely happy for yourself but your happiness is quickly washed away by a snide remark

Noun: When one person pre-empts, co-opts, or otherwise interrupts another's moment of recognition, especially in order to engage in self-congratulation or self-promotion.

Named for Kanye West's interruption of Taylor Swift's Grammy acceptance speech.

a moment in which one acts like a complete jackass, dummy and just all around idiot.
stems from the kanye west/taylor swift incident at the 2009 mtv vma awards show.

When some random asshole interrupts you while you are talking or explaining something and they say something like, "well I/someone else did that better!"

To have a moment of greatness. A moment where you know you are the best at something and nobody can ever stop you or be better the you. A moment where you have the right to be as conceded as necessary (or unnecessary) as possible. A moment KanYe West has 24/7, everyday of his life.

WHEN YOU ARE LISTENING TO SOMEONE VERY BORING AND UR IN NEED OF A FUNNY/ITERESTING DISTRACTION

When a person interrupts another person saying:
Yo, I'mma let you finish, but.... - then something that was the best to them..