Bunny Kicker:

An individual who either emotionally or physically harms those of weaker physical or mental stature. The act of hurting someone or something that is unlikely to ever hurt the offender and is vulnerable to the abuse.

There was absolutely no reason for him to yell at her in front of her friends! His career is suffering, so he is taking it out on her. He's such a bunny kicker!

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Also known fondly as: Douche-bags. Seriously. I really can't stand people who keep going on about something that is dead and arguing with people who wont fight back. OR, when people just randomly pick on others because they feel the need to compensate for something >xP It's weak. Uncalled for. And totally what you call a "dick move". Excuse my french, young ones :3