Oh yea, this is a great idea, I can just see it now:
Half the server will be standing there with the 'WTF' face, looking at the other half of the server with the 'stoned off my arse' giggles...

then in a dungeon/raid, tank dies, and it would go like this:
Tank: dude wtf?
healer: sorry lag ; ;
tank: Lies! I saw you chewing... put down the cheeseburger and heal me!
whm: <burp expression>
tank: <smoke comes out of his ears>

I think it would be hilarious, however I think it would be more trouble then its worth.