The 'Karma Chameleon' hitmaker has revealed he had to don the protective gear when Culture Club were playing a gig in Louisiana after the band were sent threatening messages.
He said: "I was thinking, 'I can't cancel the gig so I'd better wear a bulletproof vest.'"
The 55-year-old singer - real name George O'Dowd - admitted the threats from some people meant the group were restricted from appearing on certain shows.
He added: "People didn't want to have me on kids' shows."
And when he was dubbed one of the most "flamboyant and iconic" stars of all time by 'Life Stories' host Piers Morgan, he insisted he doesn't see himself in that way.
He quipped: "Well I don't think you think about yourself in those terms, do you know what I mean? You don't wake up in the morning and think, 'Oh I'm really iconic.'"
And Boy George also opened up about the late George Michael, admitting the pair were constantly "battling all the time" as they had so much in common.
Speaking on Piers Morgan's Life Stories, he shared: "We had our squabbles, he was my rival, he was called George, he made soul music so everything he did it was like we were kind of battling all the time.
"The only time we really got together was when friends tricked us and there was this one particular night where the two girls in Bananarama invited me to a dinner at a Japanese restaurant and he was there as well and we had such a brilliant time."
'Piers Morgan's Life Stories' airs on ITV on Friday (17.02.17) at 9pm.