The act of saying something completely irrelevant and or erroneous to the topic that is currently being discussed. When said, it is usually in the context of being completely stupid/ borderline retarded.
an extremly angry italian with the worst temper in the world. stay clear if you love life. have a death wish? simple find an Agliata and call him short, the rest is magic.
You hear about that guy who killed four guys in a fight?
Yeah, he's prolly an Agliata.