Disconcerting acts or words

[BulldogMcC]

I have no idea what 'act' could be disconcerting, if a LB is trying to time his blitz he runs the risk of encroaching, if he goes on the first hut and stops while not entering the NZ I have nothing. Since B cannot enter the NZ, they cannot interfer with A's movements so I think this rule only has teeth on words. (Oh, I just thought of loud clapping of hands or smacking pads meant to hinder A's cadence). I cannot recall the last time I saw a flag for this section of USC. A good U will preventive officiate this so a flag is not necessary.