Unnecessary pointless handling of, and cycling the action of, a firearm.
snogging with some fondling
Heavy petting... ie intimate fondling
Never heard the term used. Do you mean a "burp" gun?
You are probably thinking of a 21 gun salute, not a 21 gun suicide. It only takes one gun to commit suicide.
You will have define the term "carry a gun". If you mean as a concealed weapon, no. You must be 21 to be issued a permit.
Gun is the general name for a firearm- it could mean a rifle, shotgun, pistol, or cannon. Bullet is the term for the part of a cartridge that is fired out of the muzzle of a gun.
The definition of adultery varies by location, but it's unlikely that fondling would count in any jurisdiction as adultery.
Upper body fondling outdoors typically refers to touching or caressing the chest, shoulders, and arms of a person while outside. It can be a form of affection or intimacy between two individuals in an outdoor setting.
A fanciful term for a gun that has an electronic lock.
The term ballistics is the science of projectiles and firearms. Ballistics is also known as the effects of an object being fired, whether it is a bullet, gun, or cartridge.
Assuming you mean "machine guns," when most people use the term, they mean a gun that is fully automatic. That means you can hold the trigger down on the gun and it will continuously cycle the action and fire the bullets that go into the chamber.