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To invite yourself and 100,000 of your closest friends to a facebook event. Usually a birthday party. In their apartment. Usually Kate's birthday party.
Taylor: Yo, Usher. You missed out on a wicked party on the weekend.
Usher: Yeah, I wish I could have gone but I had to babysit Justin Bieber. She is such a lesbian.
Taylor: It was awesome. Someone katecrashed...
Kanye: Yo, Taylor. Imma let you finish, but David Thorne had one of the greatest Katecrashes of all time. Of ALL TIME!
by dthorne May 04, 2010
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