Flex means to show off, display, or boast about possessions, style, or status. The term functions as both verb ('flexing on everyone') and noun ('that's a serious flex'). Flexing is inherent to streetwear culture where clothing communicates status, taste, and cultural knowledge. A flex can be financial (expensive piece), cultural (rare item showing insider access), or stylistic (impressive fit demonstrating skill). The community has complicated relationship with flexing: it's simultaneously celebrated and critiqued. Obvious flexing can be seen as insecure or try-hard; subtle flexing that only insiders recognize earns more respect. 'Quiet flex' describes understated displays that signal knowledge without screaming. The term acknowledges streetwear's status dynamics honestly—people wear rare and expensive items partly to be seen wearing them. Understanding flex dynamics helps navigate the culture's unwritten rules about when showing off is cool versus corny.