When you fling your body forwards but your
head doesn't cooperate. In order for something to be a true
neck snap, the actual snap must be accompanied by an audible popping
sound.
Dude!, that car accident gave me a total neck snap!
That
bitch tossed me around the
bed and gave me a really bad neck snap.
That wooden roller coaster ride gave me the neck snap! My neck has been sore for weeks.
That old
guy tripped on the sidewalk and popped a disk. What a neck snap!