The term 'boffing
' refers to all manner of light weapons combat
(probably from the sound made when one hits another person).
Commonly practiced by live action roleplaying (LARP) enthusiasts, boffing uses rounded, foam-tipped weapons (commonly referred to as 'boffers' or 'boffing sticks').
Light weapons are most commonly constructed out of tape, PVC pipe and foam pipe insulation. They may take the form of any handheld weapon, including but not limited to:
See How to make padded swords
for construction instructions.