Analagous to the old saying, "Say, you ain't from around here, are ya?" I.e., say, you ain't been doin' this long, have ya?
Some years ago, but not all that long - probably 12-15 years - defensive linemen and linebakckers were deliberately abruptly jumping up, sideways, forward (but not into the NZ), flailing arms - making all kinds of movements intended to get team A to false start. Thus, this delay of game foul for making abrupt movements that were not a part of a normal player movement. What is normal? What is pornography? Horizontal leap frogging hasn't been seen in these parts, to my recollection of 4/10 of a century. Can't say I've ever seen it on a football field. Hardly 'normal.'
I don't understand why the rule states "Player(s) aligned in a stationary position within one yard of the line of scrimmage may not make quick or abrupt actions that are not part of normal defensive player movement (A.R. 7-1-5-IV)" if it is not because it may cause a false start. Why would anyone care? What makes a movement not part of a normal defensive player movement? If a team has determined that the monkey roll thing is the fastest way to switch positions and does it in every situation where they want to switch positions, does it then become normal or does every team have to do something for it to become normal. More importantly, why does the AR specified in the rule mention false start if false starts are relevant? AR Below:
Linebacker B56 is stationary within one yard beyond the neutral zone.
As the offense is calling its snap signals, B56 feints toward the line in an
obvious attempt to induce a false start by the offense. RULING: Deadball
foul, delay of game. Five-yard penalty at the succeeding spot.