Better than the Internet.
Maybe Charlie really does have a special ability to handle lots of drugs and alcohol, beyond the fact that he's acclimated to excess. Maybe he's a mutant with a supercharged liver and/or an entirely new filtration organ which keeps him going strong beyond a barrier which is fatal to normal humans. He should be in the next X-Men movie, and he should be brought in to handle a situation which requires doing a shit ton of drugs in order to save the world. Maybe there are aliens which are composed of a cocaine-like substance, and the only way to destroy them is for Charlie to snort them all.
GURPS: Charlie Sheen