Did you know that there is a way to completely reset your bbPress forums? This lesser-known option is hidden under the Tools >> Forums menu item in the dashboard. This is an option that you will rarely need but can be very handy for cleaning out your forums. It erases your forums, topics, replies, meta data, settings, activity, forum user roles and importer helper data.
Pushing the “Reset bbPress” button will revert your forums back to a brand new installation. Be careful, because there’s no ‘Undo’ button. As the screen info advises, you’ll want to make a backup before using it, just in case. The reset button can be very handy if you need to quickly clean out a bunch of testing data. Use with caution!