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1.
A person who constantly makes social interactions awkward, generally due to defects in their personality or after imbibing large amounts of alcohol or sometimes both. This person does not have a social radar and often kills conversations dead in their tracks. Speaking to this person often is about as pleasant as rubbing sandpaper on your face.
'Hey girls, wanna hear a rape joke?'
Silence
'God, this guy is like social sandpaper.'
by MoscowA May 01, 2010