Since this looks like such fun, I'm gonna enlighten you all. You're all wrong!
BBQ is the cheapest, nastiest sausages (think sawdust, grease, and the scrapings off the abbatoir floor jammed into a plastic tube), burnt to a cinder on a GAS hotplate. Loaded onto a stale slice of white bread, lathered with margarine and washed down with tomato sauce (think ketchup, but made with TOMATOES). Drink lots of beer, REAL beer, no hops flavour, lots of bitterness and a smidge of alcohol with an odd lack of any body.
TADAAH, a proper BBQ.
ps, bring your own flies, crocodiles are optional.