Kelly Osbourne, giver of zero f**ks, just called out her father's alleged mistress in the most brutal of ways. After Ozzy and Sharon split after almost 33 years of marriage earlier this month, the rocker's rumored infidelity with hairstylist Michelle Pugh was largely considered to be the reason for the decision. And now, thanks to Kelly, you can contact Pugh and tell her how you really feel!

On Monday, Kelly tweeted out an Los Angeles-based phone number in a message most likely targeting Ozzy's alleged mistress. The number is no longer in use (we tried), but her tweet should forever be enshrined in the Twitter Hall of Fame.

Osbourne tweeted out a phone number along with the message that anyone looking "for cheap chunky LOW-lights," "a blow out and a blowjob" should call it.

Anyone looking for cheap chunky LOW-lights a blow out and a blowjob call +1(323)9282323 — Kelly Osbourne (@KellyOsbourne) May 23, 2016

But Kelly didn't stop there. Opening the Pandora's box that is one's Twitter mentions, the reality TV star engaged in a dialogue with some vocal followers about the ethics of posting someone's phone number on social media.

@KellyOsbourne hate your father not the woman.. HE did this 2 ur family ... Again. #SMDH #childish — Terri (@tldoyle1271) May 24, 2016

@tldoyle1271 are you in my family? NO YOU ARE NOT YOU HAVE NO IDEA WHAT SHE DID! So keep ur high-mighty opinions to yourself! — Kelly Osbourne (@KellyOsbourne) May 24, 2016

The conversation also elicited some new information about the alleged affair. Apparently, Kelly considers the tryst to be elder abuse. After one commenter wrote that both Ozzy and Pugh are responsible, Kelly defended dear ol' dad by stating that he's in his late 60s and therefore exempt from any blame.

@KellyOsbourne @tldoyle1271 why would it only be one persons fault??? It takes 2 to tango - both guilty. She knew he was married 🤔 — Jodi Luckoski ⚜ (@jodee814) May 24, 2016

@jodee814 my father is almost 70 ever heard of elder abuse? — Kelly Osbourne (@KellyOsbourne) May 24, 2016

Can't we all just go back to simpler times when the Osbournes were dropping F-bombs during breakfast on MTV and Kelly was a punk princess rocking a Rubik's Cube earring?

UPDATE: On Tuesday, Sharon Osbourne addressed her daughter's controversial tweets on her daytime talk show, "The Talk," playing the comments off as largely humorous.

“What can you do but laugh,” Sharon explained to her co-hosts, according to Entertainment Weekly. “You have to laugh. And she’s just so funny.”

Osbourne added, “She loves her mom and loves her dad so much and listen, I’m always proud of my girl. What are you going to do? Be angry with her because she loves her mom and dad?”

We have reached out to Kelly's representatives and will update this post accordingly.