Why do men like grabbing women by the neck?

Theirs this guy he's kinda a friend, But I don't see him often. He loves coming behind me when were walking and catch me off guard and grabs my neck, I mean he's not hurting me it's in a playful manner. But why do you think he always doing this, I never asked him because I think I might not want to know the answer. I guess I just want to know the meaning
Why do men like grabbing women by the neck?
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