If you have a high IQ then it is that much easy for you,
1)to find what you want (age<20), like drugs
2)and be richer(age>30) than many folks , so you can drink a lot.
Dunno about finding what you want. I have a reasonably high IQ, but I couldn't tell you the first thing about where to find a dealer. I didn't even drink before I turned 21, not for lack of wanting.