A shocking video has emerged of a high school girl who assaulted her male classmate because she didn't like his ringtone.

The footage posted online shows the boy sitting in a chair seemingly holding a cell phone, with the girl standing above him.

The two appear to talk, but the sound of a ringtone appears to make the girl snap.

The girl repeatedly hits the boy and then walks away. walks by him and apparently slaps the boy's hand, slaps his face, and then walks away.

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A boy and girl appear to talk (left), before a ringtone is heard in the clip. The girl walks by and apparently slaps the boy's hand, before returning and slapping his face (right) then walks away

The girl rushes back rushes back to the seated boy. She repeatedly strikes the male student (left and right), who doesn't seem to put up a fight

'I told you to stop playing that s***, b****,' a female voice says off-camera.

Laughter is heard in the video, before the girl rushes back to the seated boy.

She repeatedly strikes the male student, who doesn't seem to put up a fight.

'When a girl hits you three times, you can hit her back,' a voice says in the clip.

Voices call for the girl, identified as 'Gabby,' to stop, and another girl gets up to pull the assailant away from the boy.

'It's my f****** song,' the boy says in his seat at the end of the video.

According to LiveLeak, the video was taken in a Pennsylvania high school.