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Noun. A violent slamming together of the words 'friend' and 'hostage'. Used when someone you are friendly with is, either knowingly or unknowingly, keeping you in their company against your will. Usually results from a sense of cabin fever, where the two friends have been in each other's company for too long, but one of them just hasn't realised it yet.
Person 1: I'm hungover from the weekend and we've just been driving for four hours straight. I don't want to play croquet.

Person 2: But there's nobody else around to do anything with me. And we've been having a great time in each other's company, non stop for the last three days.

Person 1: Uh. (to the police via text) I am a frostage.
by Oignm August 31, 2008
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