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Noun. The Friar. Noun. Slang. a person, esp. one who is annoying or contemptible. Noun. The Koster, Slang. (used as an intensifier, esp. with WH-questions, to express annoyance, impatience, etc.) Interjection - Slang. (used to express anger, disgust, peremptory rejection, etc., often fol. by a pronoun, as you or it.) Verb. Slang. to treat unfairly or harshly. Verb Phrase: koster up, Slang. a. to bungle or botch; ruin. b. to act stupidly or carelessly; cause trouble; mess up. Verb Phrase. Fuck off, Slang. a. to shirk one's duty; malinger. b. go away: used as an exclamation of impatience. c. to waste time. Idiom. Give a koster, Slang. to care; be concerned.
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