Similar to Debbie Downer and Negative Nancy, Attack Abby has a tendency to attack people to feel better about themselves. They tend to use more difficult words to confuse the one they are attacking or complaining against and use their own definitions of established terms to do so. When you go against them, Attack Abby is likely to target you, next.
He's such an Attack Abby; attacking them about their sexual orientation is the only way he can cope with his inferiority complex.
Looks like Attack Abby learned a new word again, did you see her go off on Twitter?