A word that teens use when referring to an inatimate object, someone, or someones features not being to their standards. This word is usually associated with disgust and is said in a repugnant tone.
prep1: omg this bus is hell scabby.
2prep: omg i like SO know!
prep1: lets go take the less scabby bus over there with our hot jock, daniel
prep2. omg like totally!
Of poor quality, not up to scratch. Can refer to quality of workmanship etc. Also applicable to someone who has let their standards drop in their appearance, " She's looking a bit scabby-arsed."