These images of a dirty McDonald's tray may curb your ice cream intake
 

http://img-s-msn-com.akamaized.net/t...6&q=60&o=f&l=fFor many of us, picturing the inside of a fast-food kitchen is something we either try **t to think about or we just assume is A-OK. After all, who doesn?t begin vetting a place immediately upon...

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