Dean McDermott has unleashed his anger on social media critics.

The reality TV star, whose cheating on wife Tori Spelling was exposed earlier this year on her US series True Tori, is sick of being targeted by cyberbullies.

And he’s fired off an expletive-laced rant on Twitter, threatening never to use social media again.

“I'm done with this social media sh*t. To all my fans, you're the best. Love you guys. Always will. To all the haters, you know how I feel,” he wrote.

The message came after one Twitter user called Dean a “d****e” and his wife a “fame w***e”, E! News reports.

The star was swift to respond.

"@HighonHillcrest: Noticed u didn't post a pic of urself on your profile there cupcake. Can you say coward' Sending u love anyway. No hate,” Dean wrote.

He also targeted another user, who called him a “scumbag” after he was seen at a Los Angeles-area sex shop while Tori was recently getting treatment for bronchitis and a sinus infection in hospital.

“@TruthAndSarcasm I bought a gag gift to make her laugh,” Dead explained, spewing: “All you haters need to F**K OFF!! I've had it with you a**holes. GO F**K YOURSELVES.”

"@TruthAndSarcasm who the F**K do you think you are'” Dean asked, calling the user out. “Any time any place pal. You hide behind your bullsh*t twitter name. Show urself p***k.”

Tori has been using social media lately as well, most recently to promote her reality series.

Last week, she posted a cryptic message on Instagram while updating followers on her health progress, which some took to be a shot at Dean for not being by her side.

“This sick in hospital I finally see how quickly life can take it all away frm you,” she wrote.

“We all need 2 step up frm inside& go 4 it! W/our friends by our side. Sadly I've finally faced truth that 1 person will never be there 4 me #TrueTori (sic).”

The couple have yet to directly address the claims.

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