Kerry Katona's 11-year-old son was told by a friend that he will "rape your druggie mum".
The terrifying exchange happened while Max was playing a game on his Xbox.
The 39-year-old mum-of-five spoke of the shocking ordeal in her new OK! Magazine column.
The former Atomic Kitten singer from Warrington said: "I was shaken to the core last week by a very unpleasant incident that occurred between my Max and a young lad he knows while the pair were playing on the Xbox.
"They were communicating over the headsets and when Max beat the boy at the game, this lad took the defeat badly and yelled at Max, 'I'm going to rape your druggie mum.'
"Max was upset and confused as he's just 11 and he doesn't know what the word rape means.
"I wasn't at home so it was down to Ryan to explain and calm him down. I've asked to speak to the boy's parents about it, as I will not have my children bullied because of who I am and what my past was.
"It was such a terrifying wake-up call. It proves it's not just online trolls who can attack — the verbal word is so powerful and damaging.
"I feel like no one's safe, not even my 11-year-old baby who just wanted to play his computer game.
"I know Max will be OK, but I've taken the Xbox off him for a while — even though it wasn't his fault — because I need to work out how to do the parenting settings properly. I won't risk him hearing threats like that again."
Kerry has always been open about her past, talking candidly in several interviews about her struggles with money, addiction and her mental health.
It has been a difficult few months for Kerry and her children after the death of her third husband George Kay, who was father to Dylan-Jorge, five.
