College kids being able to ANONYMOUSLY buy weed with a Visa/MasterCard .... Is that a "killer app" for Bitcoin?

1.  Kid buys Bitcoin with Visa online.
2.  Delivery Man accepts Bitcoin as payment.

Not to mention...

3.  Delivery Man can then keep it in Bitcoin as an investment, or
4.  "Cash Out" daily or weekly in a completely separate transaction with a local Cash-for-Bitcoin dealer..., or eventually even
5.  Send payments to distant suppliers without transporting cash, Or...
6. Travel abroud and take their Bitcoin with them via Internet... and "cash out" little by little to live on.