“I need to flex my muscles at the gym.”
Slang Entry 175 / 1605 60-second read
Flex
To show off or boast about something.
The comparisoni
“Posting your new car is a weird flex, but okay.”
The ruleii
¶
FLEX = boasting.
It moved from physical 'flexing' of muscles to metaphorical 'flexing' of status/possessions.
Memory aidiii
Remember it like this
Flexing = showing what you’ve got.