Authority alert is a mechanic in Bully. It occurs when Jimmy is bullying someone. Instead of fighting back or cowering, they raise their arms above their heads and scream for help. Any authority figure within a certain radius comes running towards the person who yelled.
Each student has their own "Chicken" stat, measuring the chance that they will scream for help when threatened. The higher the stat is set, the more likely they are to scream. As little kids, older Non-Clique Students and Nerds have higher "Chicken" stats, they can be seen screaming for help. Other clique members such as Bullies, Preppies, Greasers and Jocks have their chicken stats set to 0 and thus never scream for help, although they do have dialogue for doing so. Hobos can also yell for help.