A Scoittish woman who was cheated on by her boyfriend is being slammed for her particularly vicious payback — which she recorded and shared on Snapchat to brag about what she'd done.

According to her sister Kianna Connelly, the scorned woman was with her boyfriend for over a year when he strayed. When she found out, she destroyed his stuff, cutting up his clothes, microwaving meat in his shoes, wiping his toothbrush on the inside of the toilet, and even pouring hair remover in his body wash.

She even uploaded a sassy, lighthearted video documenting her revenge — which countless Twitter users are saying is 'nasty,' 'psycho,' 'childish,' and even criminal.

Vicious: A woman was with her boyfriend for over a year when he strayed. When she found out, she destroyed his stuff

Gross: She even uploaded a sassy, lighthearted video documenting her revenge, which included wiping his toothbrush on the inside of the toilet

Balding: She poured out his bodywash, then filled the container with hair removal cream

Cruel: She cut up his clothes, including 'one of his most prized possessions'

Destruction of property: She used several pairs of scissors to get the job done, slicing up his shirts and trousers

'Sisters boyfriend cheated on her after having been together over a year and meeting her kids, her Snapchat has me in a kink [sic]' Kianna wrote on Twitter, adding a string of crying from laughing emojis.

The video starts with the sister wiping her ex's toothbrush inside the toilet bowl.

She goes on to pour out his bodywash and fill it with Veet hair removal cream.

All the while, she is listening to music and singing along cheerfully to Andy Grammer's Honey, I'm Good.

She then starts cutting up clothes, including 'one of his most prized possessions.

She uses bleach to stain a shirt to say 'I am' with a drawing of a penis, still cheerfully singing to music.

Thinking it's funny: Her sister Kianna shared laughing emojis as she posted the video on Twitter

Trash: At one point, she used bleach to stain a penis into one of her ex's shirts

Gone: She scooped hot meat into one pair of shoes and pink yogurt into another

Costly: She really trashed his home, rendering most of his stuff useless

Mommy's moral-free helpers: She even appears to have had some help from her children

She microwaves what looks like some sort of meat or perhaps dog food, before scooping it into a pair of athletic shoes. She squeezes yogurt into another pair of shoes.

Perhaps most shocking of all is one image, which shoes a friend and several children helping her, indicating that she got her kids to participate in the property destruction.

Since Kianna shared the video on Twitter, it's been viewed over five million times, and 128,000 people have liked it.

A few have left supportive comments, writing that they find the behavior funny.

'First of all, hilarious. Second of all, and most importantly, he really isn’t that cute. Your sister can do so much better! She’s cute, she can find a better man easily!' said one.

'Serves him right we’re proud of you baby girl,' wrote another.

They approve: The video got 128,000 likes and several commenters shared replies praising the woman

But overwhelmingly, commenters have chimed in to criticize her, calling her behavior 'crazy' and 'toxic.'

'Nah this aint it fam, he shouldn't have done that but what she did is nasty,' wrote one.

'Whether someone cheated or not, this is psychotic childish behavior. Just move on,' said another.

'Personally, I wouldn’t have wasted my time and energy on a cheat. Resentment and bitterness is like drinking poison and expecting the other person to die,' said a third.

'Your sister is childish. She is emotionally unstable and I hope the lad makes her pay for all the damage she caused and recorded herself doing. Very toxic behaviour,' one more chimed in.

Not OK: But the vast majority called the behavior 'toxic' and 'psycho' and pointed out that her ex could press charges

What's more, dozens have pointed out that destruction of property is a crime — and pouring hair remover in his shower gel could legally constitute assault.

'Hope she enjoys jail cos I'd be pressing charges,' wrote one.

'So she’s cheated on AND is gonna have a law suit. 2020 starting strong for her,' said another, while a third wrote: 'Pouring veet and chilli powder in his shower gel is assault. Getting her kids to join in is just bad parenting.'

'How to lose a court case and pay for damages and possibly assault 101: don't film your crimes,' added one more.

A few even pointed out sister Kianna's hypocrisy, pointing to a pinned tweet at the top of her page from earlier this year.

'Just because you’ve fell out with someone/don’t like them anymore does NOT give you the right to spread their secrets, proper weirdo behavior,' she wrote.