The idea here was blatantly to get a dumb-sounding rapper like 2 Chainz on the show to argue the case for weed legalisation and just have Nancy Grace tear him apart, but nope — 2 Chaaaaainz came through with some actual common sense comparing weed to alcohol and how there are morons out there abusing every substance, not just marijuana:

So there you go everyone — nothing to be worried about. Spark up and enjoy.