To kill somone or to be killed.
Brian went and gaked himself.
by Joe Jacobs December 14, 2004
To be strung out on cocaine
I came home afterwork and roomate had been doing blow. He was totally gaked!
by Eric McDonald April 18, 2005
To disable something beyond repair while in the act of fixing it.
Greg GAKed the database when trying to recover the lost data.
by sjc February 08, 2005