abra,
i've heard the same thinking about drinking and coke. but i usually ignore that. i almost always drink on it, but usually after a 2-4 drinks and a couple rails i'm fucked up enough to not need to drink anymore. but again, i'm small and have a low tolerance for alcohol. i'm not sure if that makes a difference, but i've never had a problem with it.
peace.
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"Ass, cash, or grass. Nobody rides for free."