News, views and top stories in your inbox. Don't miss our must-read newsletter Sign up Thank you for subscribing We have more newsletters Show me See our privacy notice Invalid Email

Video Loading Video Unavailable Click to play Tap to play The video will start in 8 Cancel Play now

This shocking audio reveals how a teacher boasted to pupils as young as 12 about the size of his penis.

Captured in secret on a student’s mobile phone, the teacher is heard brazenly telling children he would “show you what a d*** is”.

The startling recording has caused outrage in Dallas where the unnamed teacher was working, with parents demanding he be fired.

In one part of the recording, the teacher says: "If you don’t give a f***, then I don’t give a f***.”

He also tells them that: “Some people’s d***, they only go that far. My d*** goes all the way to that fence.”

In another section, after telling children he would “show” them what a d*** was, he added: “I’m gonna d*** your a** all over.”

The shocked mother of the student who filmed the outburst said she now wants the teacher removed from the classrooms of Holmes Middle School.

The mother, named only as Diana, told American news network CBS: "The whole profanity, cussing… it was all disturbing but the most disturbing part was the end of the video… where he talks about his private parts.”

She added: "I want him to be out, and I don’t want him to be at any school.”

After news of the recording broke, the school issued a statement condemning the actions of the teacher.

(Image: CBSDFW.COM)

A spokesman said: "It has come to our attention that one of our teachers may have spoken to students using inappropriate language, tone and behaviour during a class recently.

"That staff member has been placed on administrative leave."

Dallas Independent School District spokesman André Riley added: "We’ve listened to the tape, and we’re horrified by it.

"We’re going to take steps to make sure our students are not exposed to that ever again.”