Kieran Hayler jumped to Harvey Price's defence when cruel trolls mocked the teenager's disabilities on his 18th birthday.
Harvey, who is who is visually impaired, autistic and suffers from Prader-Willi syndrome, is celebrating the milestone day in lockdown with mum Katie Price.
After spending six years with Katie, Kieran took the time to send Harvey birthday wishes and couldn't sit back when he saw someone respond to his message with a vile joke.
Kieran, who shares Jett and Bunny with Katie, first commented on Katie's lengthy tribute post : "Happy birthday Harvey!" followed by two love hearts and a frog emoji.
One social media user then responded to Kieran with an extremely nasty message about Harvey.
Kieran then outed the account immediately by tagging the troll and branding them 'absolutely disgusting' and 'vile'.
"You are absolutely disgusting. Vile human," he fumed. "How dare you hide behind that keyboard and write sch nasty things about such a beautiful, nice natured boy. Harvey does not have a bad bone in his body. Leave him alone."
Harvey has been a target for online abuse in the past, so much so that his mum Katie has battled to pass a law in his name to make it an offence to troll people.
Katie even took her campaign to parliament where she gained the support of MPs for Harvey's Law which had been making progress before the lockdown.
Ex glamour model turned activist Katie heaped praise on her eldest boy today as he celebrates his 18th birthday by poignantly listing all the ways he hasn't let his disability hold him back in life.
In the emotional message, Katie wrote: "Happy Birthday to my Harvey Price. What a journey the last 18 years have been.
"You’ve defied all the odds and proven that you will not let your disabilities stop you.
"They said you’d never be able to read, but you love reading to your younger brothers and sisters.
"Your talent has no boundaries with your artwork on public display at Gatwick airport, designed your own greeting cards for Anna Kennedy Online and raising funds for the NHS by designing your own T-shirt.
"You light up a room with your unique humour and you have everybody in stitches.
"You keep me entertained with your diverse taste in music and keyboard skills, from Beethoven to Queen.
"Harvey Price, you make me so proud every single day. Mum x"
Katie - who is mum to five children in total - then followed this up with multiple pictures of her eldest child.
