Wild new video shows a teacher walking cops around her Florida classroom while telling them in graphic detail how she had sex there with a 17-year-old student.

Heather Mashburn-Smith, 37,  was candid with police officers in late April as she confessed to her illegal romps with the underage teen in her classroom at Port Charlotte High School, according to the bodycam footage recently obtained by Law & Crime.

“Can you just show us where in the room the sexual activity took place?” a deputy from the Charlotte County Sheriff’s Office asks the bespectacled teacher, according to the clip.

Bodycam footage captures the moment deputies arrest Heather Mashburn-Smith, allegedly admitting to authorities that she had sex with a student multiple times in her classroom. Charlotte County Sheriff's Office

Mashburn-Smith, seemingly nervous but calm, walks the officers to the back of the classroom and points to a pair of desks.

“I feel like it was these desks,” the teacher says, before changing her and moving to others, saying, “I’m pretty sure it was these ones.”

“As far as the intercourse goes, this is the desk that we leaned back on,” she said — describing how she was on top of the teen and facing him as he sat on a chair.

She then describes the positions the pair were in and what directions they were facing, including when she was on top facing him as he sat in a chair.

The disturbing tryst allegedly began with the pair flirting over Snapchat after the teenager called her “pretty,” according to court documents.

The teen then started making extra trips to Mashburn-Smith’s classroom where they eventually kissed — and had sex at least twice, according to the affidavit. 

In the bodycam footage, Mashburn-Smith admits that she would sometimes leave a crack in the side door so the boy could sneak in after football practice. Other times, he’d knock and she’d let him in.

“It’s not like I let him in and we went right to it or anything,” she tells the officers. “We would hug and talk … like I said it was not premeditated sex.”

Mashburn-Smith, reportedly said the student made her feel “special and desired.” Charlotte County Sheriff's Office

The bodycam video, from her April 29 arrest, later shows Mashburn-Smith being placed in handcuffs and hauled away to the police station.

The teacher complained to the teen about her marriage, according to charging documents, and told the boy she wanted to leave her husband for him when he turned 18, the legal age of consent in Florida. 

That concerned the boy, who stopped chatting and blocked his teacher — who kept messaging him on Snapchat, according to the affidavit.

Mashburn-Smith then admitted it all to cops, saying that she “made a mistake,” the docs said.

She admitted she knew the student was “just a teenager” but said he made her feel desired, officers said.

The educator was charged with unlawful sexual activity with minors, which carries a maximum sentence of 30 years in prison. She was also suspended from her teaching job.