I have ridden with the same arnettes for three years, they are awesome, and they never fogged untill last year when I was hiking on a cold day.  I need new ones though, because I ran into a tree last year, and got a pretty big scratch across the lens.
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When you assume, you make an ass out of u and me.(think about it)
'My knee hurts' (Jeff Merat after grinding a lunch table for an hour instead of sitting in the ski patrol shack for his torm mcl and acl which he got earlier that day.)
'I'm not asking for any help, just mabe for you to get off your ass.'(my dad)