There are no real windows, just some holes cut in the sides, like the portholes in a ship, but not round and not square, with rawhide holding the shutter s up on the outside.
With other audiences you mustn't attempt to cut in with humor as they will resent an outsider making disparaging remarks about their canteen or their chairman.
I almost had it when Dad flung a catalytic converter. I leapt aside, cutting my hand on the serrated edge of a punctured tank. I wiped the blood on my jeans and shouted, " Don't throw them here! I'm here" !