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Fourth base is the final step in a physical relationship referring to penetrative intercourse. Fourth base is also referred to as home or a home run.
The four bases are commonly used to describe what type of physical action a couple has together. Generally, first base refers to making out. Second base is rubbing, dry humping, and grinding. Third base is oral sex. Fourth base is penetrative intercourse.
If you're just tipping your toe into the world of BDSM, you may be unsure where to even start when it comes to planning out a scene.
We made this quiz to provide you with your next, or first, BDSM scene based on your own tastes and desires!