Whenever you break a Shotgun rule as stated in this guide, you may be “voided” from receiving Shotgun privileges for that ride. Although somewhat discretionary, voiding automatically applies if you call Shotgun while indoors, if you do not have your shoes on, or if you display any other blatant disregard for Shotgun protocol.
In circumstances of minor Shotgun rules infractions, voiding may not need to be exercised. Voiding only applies for the ride directly after the voiding has occurred, and after that ride, you may regain full Shotgun privileges. Once someone has been voided, then all of the other passengers are free to once again call Shotgun in the correct manner.