A condition where person who passes you in the street or wherever intentionally turns their head so they don't have to look at you resulting in their neck being stuck in a random direction, all to avoid those below them
When a fly honey walks by and a guy or group of guys suddenly jerks their head to look. Like when you pass some fine-behind chick and your body stays forward but you twist your neck to get veiw from the rear. Your neck isn't literally broken unless you seriously jerk too fast. That happened to a friend of mine.
The term used when you call someones namefrom behind or tell them to look somewhere, causing them to suddenly turn their neck in order to look. Hence, they move their neck in a violent manner as if to figurativly "break their neck".
Little Tim is walking and Stuy yells,"Hey Timmy". Little Tim turns suddenly and Stuy hollas "BROKE NECK!".
The act of buying breakfast for your significant other at a drive-thru then accelerating quickly before they take the first bite causing whip-lash and the spilling of food.
The art of getting your friends to quickly look at something, making them twist or jerk their neck as fast as possible to look at what you pointed out. ie: hot girl, nice car, etc...
Andre: Hey Helder, check outthe tits on that girl.
Helder: *quickly jerks nearly spraining his neck*
Andre: Ohhh my BROKE YOUR NECK!