Which is kind of fun because I never noticed any effects from drinking caffeine beverages. So I just drink them for taste.
Would that mean I'll not notice cocaine either?
Not necessarily, because the two drugs are metabolized through completely different channels and, other than the fact that both are stimulants, have very different effects (ie, the mechanisms by which they take their effect is very different).
You may just have an abnormally high tolerance to caffeine, but there's no reason to suspect that that would carry over to cocaine, as cocaine targets both the D1 and D2 receptors, and caffeine provides cross-tolerance only to drugs which target one XOR (exclusive or) the other[0].
