1. With Firefox open, navigate to your History by using the drop-down bars at the top of the screen.
2. In the drop-down, select Clear Recent History.
3. In the drop-down Time Range to Clear, select Everything and make sure all the check boxes you'd like to delete are checked off.
4. Press the Clear Now button.
Didn't that feel good? Now, you digital Marie Kondo, celebrate your newfound scorched-earth skills by visiting all the weird websites your heart desires. (As long as they're legal.)