Demi Lovato is speaking out against the tattoo artist who slammed the singer and called her a "drunk ass."

Weeks after Demi covered up her kiss mark tat — you know, the one she referred to as her "vagina tattoo" — the woman who inked the pair of lips took serious issue with Demi's term of endearment for the finished product.

As we previously reported, tattoo artist Ashley McMullen called out Demi on Instagram, writing, "Cool post @ddlovato, thanks for getting the tattoo covered up I did for free that you specifically asked for. Not to mention you didn’t even have the courtesy to offer me any money in the first place."

McMullen goes on to detail the entire experience, which allegedly included a drunken Demi peeing on a toilet seat. (Demi Lovato has long been outspoken with her substance abuse issues, and recently celebrated three years sober.)

"You pissed all over our toilet seat and you made a fool of yourself. What a shame that people look up to you," the tattoo artist wrote. "The tattoo you covered it with kinda sucks too. Looks like you might forever be a goon. Feel free to bombard her since I got no recognition from the tattoo. #scumbag #turd #claimstobesober #drankallthebeer #peepeetoiletseat #yousuck."

Demi, being, well, Demi, didn't exactly take this lying down. A few days after her initial response — which was comprised of a series of emojis — she issued a self-aware (and somewhat backhanded) apology.

"Dear Ashley McMullen, I wasn’t going to acknowledge your bitter Instagram comments but since your side of the story has picked up some headlines, I would like to share my thoughts and send you a proper apology," Demi reportedly wrote in a tweet that since been deleted (quotes via Just Jared). "First, I would like to say I’m really sorry I don’t remember you or getting tattooed by you, but as you know I was f---ed up and sometimes people act like “#turds” when they’re loaded. Second, I apologize for my “#peepeetoiletseat”… That wasn’t on purpose, I was simply a drunken teenage girl."

"Lastly, I apologize for making fun of your work.. But… if I were you, I wouldn’t claim that one because it looked more like an open vagina (or even a butt hole as my 8 year old little sister called it at the time)," she continued. "I also wouldn’t be admitting to the fact that you tattooed a very intoxicated 18 year old on a tour bus without the proper judgement that most legit tattoo artists have of saying 'Hmm… This underage kid is wasted, maybe I shouldn’t permanently ink a hot pink kiss mark on this girl’s wrist….? Oh well… F--- it, she’s famous.'"

"I can’t blame you for getting the tattoo, I take full responsibility for that but if the issue here is you wanting credit, maybe next time you should wait for the person to get your tattoo sober so they would actually remember getting the tattoo in the first place, or perhaps you could’ve thought about all of this as a blessing that I forgot everything about you – that was until you outted yourself for the now internationally infamous 'vagina tattoo,'" Demi concluded. "But you’re right, I should give credit where credit is due, and you Ashley, surely deserve credit for this one. #justputitonmytab."

BURN.

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