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Hell hath no fury like an Osbourne scorned.

And with her parents seemingly on the verge of divorce over her father's alleged affair, Kelly Osbourne is unleashing that fury on Twitter.

On Monday, May 23, Kelly tweeted out the phone number of Michelle Pugh, the hairstylist accused of having an affair with Ozzy Osbourne, along with an X-rated version of "for a good time, call …"

"Anyone looking for CHEAP chunky LOW-lights a blow out and …," the post began, before specifying a sex act and instructing readers to call Michelle, whose phone number reportedly followed.

The unprintable tweet was quickly derided by Kelly's followers, one of whom slammed her for being a "bully." She rewarded that person with another profanity-laced tweet.

"Why would [the affair] only be one persons fault??? It takes 2 to tango - both guilty. She knew he was married," another posted (via the Mirror).

Kelly had a response for that one, too.

"My father is almost 70 ever heard of elder abuse?" she retorted.

Someone else pointed out Kelly's anger might be misdirected, suggesting, "hate your father not the woman.. HE did this 2 ur family ... Again. #SMDH #childish."

Asked Kelly: "Are you in my family? NO YOU ARE NOT YOU HAVE NO IDEA WHAT SHE DID! So keep ur high-mighty opinions to yourself!"

The phone number Kelly initially posted has since been deleted.

Meanwhile, it remains unclear what Sharon Osbourne's next move will be.

News the talk show host was leaving Ozzy after allegedly finding proof he was cheating on her broke in early May. Since then, she's spoken publicly about the allegations on "The Talk," saying she "can't live like this" and that she needs "time to think about myself."

Multiple reports have suggested Ozzy wants to fix the couple's 33-year-long marriage.

And Sharon may be open to a reconciliation. Last week, they were spotted sharing an SUV on the same day they teamed up to announce Black Sabbath's 20th anniversary Ozzfest plans. At one point while the pair were onstage, the rocker gave Sharon a hug, which she accepted with a smile.

A source recently told Page Six filing for divorce would be "a huge decision with a lot of moving parts," and that Sharon's likely to take her time before calling it quits.

As for Kelly, she seems to be standing by her nasty tweet, which remained at the top of her Twitter feed as of Tuesday morning.