What is Gun Bunny?
1.
a sarcastic name that soldiers will call other soldiers who handle artillery in the military.
"Steve's a gun bunny"
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2.
Incoming! Get the gun bunny down in his hole!
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3.
N. A person who loves guns, especially big ones, and has lots of them, often to a ridiculous degree. Mel Gibson and Renee Russo's characters in Lethal Weapon 3 could be considered gun-bunnies. Arnold Schwarzenegger's character in Commando, and all the commandos in Predator were better examples of gun bunnies. Often used in a mildly derisive manner. Most frequently used this way in role-playing games (RPGs).
"And so the gun bunny whips out a rocket launcher and blasts that stupid neighbor's dog that wouldn't shut up."
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4.
Typically, military personnel enlisted in either the Army or Marine Corps who operate artillery pieces. Typically denoted by lack of mental competence and the ability to only perform jobs that don't require much thinking.
I got the shell, boss! Do I put it in the hole?