Bases: Refers to the stages of physical intimacy in a relationship.
1. First base: Kissing or making out.
2. Second base: Touching or feeling each other in an intimate way.
3. Third base: Going further than just touching, but not having sex.
4. Home run: Having sex.
Example 1: "I heard they finally made it to third base last night!"
Example 2: "We haven't even gotten to first base yet, we're taking it slow."
