Yea, hitch coupler. Well, sorta. Got home from a bbq, might have been the workday a couple years ago where we cooked ribs for the volunteers, sitting in the driveway after getting the pit all squared away in its spot, having a cigar, relaxing. Glance over at the truck and I'm squinting at the hitch - but can't see a nut on the bottom... YIKES! No idea how I got home without being passed by a runway bbq pit!