(英文) class monitor, the biggest committee member in a class, their duty is usually helping the teachers with miscellaneous tasks (e.g. distributing, collecting the reply slip). In primary schools, the class monitors are also given the rights to keep track on the behaviour of classmates, and the class monitors can report the bad kids to the teacher, as well as punishing the classmates to cover their mouth.
(粵) 我個班長好賤㗎，成日要脅我請佢食嘢，唔係就摘我名。 (ngo5 go3 baan1 zoeng2 hou2 zin6 gaa3, seng4 jat6 jiu1 hip3 ngo5 ceng2 keoi5 sik6 je5, m4 hai6 zau6 zaak6 ngo5 meng2.)
(英) My class monitor is a scum, he always threatens me to buy him snacks, or he will report me as a bad kid to the teacher.