This document is a journal entry by a student named Tan Sheau Hui describing their observation of social behaviors near a beverage stall. The student identifies three social psychology concepts seen in their observation: schema, where customers followed an organized queueing and ordering system; self-fulfilling prophecies, where some wore shorts believing it would keep them cool despite likely getting warmer; and availability heuristic, where a passerby was drawn to the beverage stall upon seeing the large crowd. The student concludes it is important to be aware of social psychology concepts to understand oneself and interact well with others.