Woah, don't throw the 'c' word around. He's young, yes, but that's it.

"Speedster and the associated metabolism. My body processes things a lot faster. I'm not immune as it were, but I'd have to drink a lot of really strong stuff really fast. And I'm limited by how fast fluids inherently flow out of bottles."

Now, you mainline him with something, his heart beats fast enough that he could get a good bit of alcohol running through his system quickly enough to get drunk.