What Does ‘Flex’ Mean?
To flex is to show off something you are proud of, like a skill, new purchase or achievement.
Moods & reactions verb / noun
Examples of ‘Flex’ in a sentence
- “He was flexing his new sneakers.”
- “It is not a flex, I just got lucky.”
Where does ‘Flex’ come from?
Based on the idea of showing off muscles, and common in hip-hop and social media.
How to use it, and when not to
Use it for playful bragging. A real "flex" can hurt if it makes others feel bad.
For parents and teachers
Fine around parents and teachers. Safe.
Related slang
Frequently asked questions
What does Flex mean?
To flex is to show off something you are proud of, like a skill, new purchase or achievement.
Where does Flex come from?
Based on the idea of showing off muscles, and common in hip-hop and social media.
Is Flex OK to say around parents or teachers?
Fine around parents and teachers. Safe.
How do you use Flex in a sentence?
He was flexing his new sneakers. It is not a flex, I just got lucky.
More moods & reactions slang
Bed rot, Brat, Bruh, Cooked, Crashout, Delulu. Or browse the full A–Z / try the Slang Translator.
Sources
Definition written by VibeDex. Slang changes quickly, so this is a snapshot. Last reviewed 2026-10-23.