The phrase is often used to express extreme frustration, not actual violence.

Metaphoric Anger

It conveys annoyance but can be used humorously among friends.

Emotional Context

Rarely does someone mean they will physically hurt someone; it's hyperbole.

When used literally, it describes an act of strangling which is violent and illegal.

It vividly describes the action of twisting or squeezing the neck.

Using this phrase could suggest intent to harm and have legal repercussions.