Sexpert Auntie Angel, aka Denise Walker, says that women who have used her fellatio techniques have caused men to pass away mid-blow-job.
In an interview with Vice, the 43-year-old woman from Chicago says that her "Death Technique" has caused men to have "massive heart attacks".
In her new technique video, Angel claims that she can show you how to give a man "the best oral sex of his life" by using a grapefruit.
View this video on YouTube
That weird noise she makes in the video? Angel wanted to make a noise that was "so out-of-the-box that he would never forget you until the day he died. He would just keel over and in his last breaths he’d still remember that sound."
Based in Chicago, Angel has reportedly taught more than 50,000 people over the past 10 years in her popular sex-advice classes.
Angel says that a man she was dating gave her the idea to use a grapefruit. When she tried it on him he said, "Oh my god, it seems like you're giving me fellatio and sex at the same time."
Angel is a big promoter of safe sex in the African-American community "because HIV rates are really high in our community".
She told Vice that in an effort to promote condom use, she once rolled a condom on her foot in front of the class. "I stuck my foot up in the air and told the men, 'Look, if your penis is bigger than my foot, you don't have to use a condom, but I feel like that's not the case.'"
Her "most important piece of sex advice" is for women to become "a beast".
She says: "Your mouth can do things your vagina cannot do. Your vagina is amazing – she is so amazing that, nine times out of ten, a man you're having sex with will have an orgasm. That's how great she is. God made her perfect. Your mouth is different: You have to work at it a bit. But once you have a great vagina – which is already taken care of – as well as great head, that's when you become a beast."