Let me try this again.
You have to be 18 to have a Paypal account.
Is English a second language for you?
if paypal find out the guy is only 17, they simply close his account
if a bank finds out the guy is 17 or the friend has allowing another person access to an account not belonging to the account holder. police and financial crimes authorities get involved. bank accounts are closed, criminal records, court fines and maybe jailtime!
stupid advice.. is being a prick your first life choice.
localbitcoins is now escrow as standard and does not involve meeting strangers face to face in dark alleys. thus it is much much much less of a risk, not illegal and an acceptable method of getting bitcoins.
why would anyone in their right mind tell a kid to do something so stupidly illegal that can affect the rest of their life. also, i must add that advice means days of opening bank accounts, funding bank accounts, opening and verifying bitstamp accounts, then funding the bitstamp account. is a hugely inefficient idea, taking weeks compared to just wire transferring to a local bitcoins transactor, taking at most 3-5 days (purely the time of 1 wire transfer).
i see no positives in such an idea to use such illicit activities. when there is a much simpler, faster, easier and legal method to do it. and its called localbitcoins