Long time ago when we were dirt poor, I went through a Burger King drive-through to pick up food for me, my wife, and my son. We had a coupon for buy one Whopper, get one free, which at that time was a big deal. When I get to the pick-up window, the girl sets a bag of food on the sill, so I take it and start rolling my window back up. She says "Hold on, sir" and sets another bag on the sill. There's no way I ordered enough food to fill two bags, but I took it because, well... free food. She says "Okay, one more" and sets a third bag of food on the sill, which I take.
She actually double-checks something and says "You're all set, have a good evening!" and I took it all home. One of the bags was mostly Whoppers, four or five of them, and I think another burger or sandwich or two. One bag was all fries. The third bag was our actual order.
I'm betting the guy behind me was pissed when he got there and none of his food was ready, there was mass confusion, and finally they figured it out and had to remake everything. Yeah, this makes me an asshole for doing it, but... free food. Anyone who's been out there and literally not known where their next meal is coming from, or when, knows what that means. Those of you who haven't, shut up.