Verb.

1) Euphamism for "getting jiggy with it"

2) Well, when a man loves a woman, or a man loves a man, or a woman loves a woman, or a group of people love eachother, they get together, in private, public, or sometimes on camera, often on a mattress, and participate in sexual activity, often moving the mattress in the process.

3) What Kristin is calling it these days

When you eat dirt for the first time and leave your family to build a shack in the woods