I learned this weekend, to my horror, that backyard barbecues are an abomination to God, but only if you've got a fence. I learned this during Pastor Bob's message, but he didn't say it; I just saw it in the Bible verse so now I know it. Check it out in your own King James... it's in Romans 14:20!!!
(Hmm... now that I think about it, if you've got a fence maybe you could grill outside and then eat inside. That seems like it would be OK.)