Free base jerking is the action of jerking off in unusual locations of your home when no one is home to judge you. A typical arrangement is that you put porn on in multiple rooms and run from room to room jerking off.
With this said no one really free base jerks. It is just a expression that shows the freedom in masturbating one has when no one is home.
The act of killing the opposing team in a base, often uncapturable, but sometimes also of the capable variety. Often uses the most 'invincible' weapon available, such as a tank or a siege weapon.
National Hero: Agh! We're losing!
Royal Team: BASE RAPE TEH NUBS!
National Team: Noooo!
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Person A: Why do they call it "base raping?"
Person B: Because it's like forcing someone to have sex with you. It might feel good for the perpetrator, but the other people of the world think it's wrong.
Hannah: What did you have for dinner tonight?
Red: A bachelor's steak.
Hannah: What kind, honeynut cheerios or trix?
Red: Neither, honeybunches of oats!