Mike Tyson took a bunch of beatings over the course of his legendary career ... and while these days he advocates for the use of marijuana to deal with pain -- he admitted at one point in his life, he relied on fentanyl.
Tyson opened up on using the dangerous drug during a discussion on the "Katie Miller Podcast." At one point, he was asked about how he balances his advocacy for weed and being a role model ... and he responded with a simple, "I am who I am.