A British sperm donor, Simon Watson, who claims to have fathered more than 800 children, said on Thursday that he sells his “magic potion” on Facebook for £50 a pot. Instead of going through sperm banks, the 41-year-old decided to start his own business via social media platforms and other websites. “I used to go through sperm banks, but doing it myself is much more convenient for me,” he told the BBC.

Watson has been donating his sperm for 16 years. He has two sons from his first marriage and a daughter from his second marriage. According to the BBC, he now wants to “crack a thousand”. He said, “I’ve had way more than 800 children over the years – they’re just the ones I know of.”