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4.
1. Of or relating to the trajectory of projectiles, their motion and/or effects. Used in circuses by clowns to properly gauge and define accurate custard pie throwing. Although rarely heard, ballistics are all around us. When we throw a broken bottle into the face of a policeman, we unconsciously use our acquired knowledge of ballistics to work out exactly how hard and high the throw must be to really mess up the bitch.

2. To be incredibly angry. See also furious and apeshit.
2. "Aw, I knew I shouldn't have thrown that bottle. Dad's gonna go ballistic when he finds out how much the bail is."
by Coaldrone January 24, 2004
 
1.
to be extremely and uncontrollable furious
Fred went ballistic, and managed to punch 5 holes in the wall, in addition to throwing a microwave halfway across his house.
by silvergatlin October 01, 2003
 
2.
The term to "go ballistic" probably originates from guided missiles. A guided missle that loses it's lock will go ballistic, that is to say it becomes an unguided missile, likely to cause damage wherever it lands. Hence the use of ballistic to describe someone who has lost control and flown in a rage.
"You must keep the target inside the HUD or the missile will lose lock and go ballistic."

"If my mum finds my stash of porn she is gonna go ballistic."
by monster-munch December 18, 2007
 
3.
Slang for large breasts
From the game RE4:
Luis, "I see the president has equipped his daughter with... Ballistics"

Or

"Yo, dude... Look at the ballistics on that chick..."
by Vemiermark4 August 27, 2006
 
5.
(verb-to go ballistic, mostly a British term): to go berserk on someone/something.
mother: sons, I am gone to my hairdresser appointment, i don't want you to go ballistic on each other, I know you like to fight f-sag but please watch TV comme du monde.

older son: yes mom!.
by Sexydimma July 23, 2014
 
6.
To go all out, balls out, with no fear.
From the movie Top Gun, Goose to Maverick;

"We're going ballistic!"
by taffnevy August 19, 2007
 
7.
To be drunk out of your mind, being so drunk you don't even know that you're drunk and making an ass out of yourself, raging on your friends, picking fights and being a total jackass.
"I drank a bottle of tequila last night, became ballistic and punched my best friend. Not my proudest moment..."

- I heard Steve went ballistic last night?
- Yeah, that crazy moron drank a keg and was completely out of control.
by Swedish Jesus May 15, 2012