I don't recommend this, but if you really want to smoke your tailgater you could install a fogger like they used to sell to attach to your lawn mower. I once had one on my simplicity lawn tractor for fogging the mosquitos in my yard. It drips kerosine into the muffler, where it is vaporized and produces an amazing amount of fog. Of course the insect fogger had insecticide mixed in with it. Now if they just sold idioticide I'd be in favor of it.
I love the idea of the windshield washer, now someone come up with something disgusting to put in it.