Also, "f-ing the horse."
1. An expression used to define something detrimental to someone's career or livelihood.
2. Any action that has a harmful effect on oneself or others around them.
Taken from Daniel Radcliff's decision to star in
London's revival of Equus, a play about a
teenager with a sexual attraction to horses, causing
parents to refuse to see any more of the Harry Potter movies in protest.
Howard
Dean totally fucked the horse when he screamed during campaign season.
Tim was f-ing the horse when he decided not to go to
class at all senior year.
Stacy's decision to pose for Playboy while on
American Idol was really fucking the horse; it ruined her chances of staying on the show.