When some one is acting like they can do something, when damn well you know they can't, Just to make themselves look good
Yo stop gym flexing, you know you can't lift 200 lbs
When somebody flexes with items that they stole from somebody else
"Hey! Did you see Sidh's new AirPods??"
"No, he's just false flexing-he stole that from coach"
A cotch Flex is a type of sex toy, used by asian men.
That cotch flex felt really good yesterday night.
When the penis shaft bends slightly during homosexual anal intercourse
when you flex the rainbow in Shane he really likes it!
To brag or boast about your personal belongings or accomplishments
Man Keaf just got a new Rolex he was on Snapchat sumo flexin
Flexing kegels is flexing nuts but for the ladies.
“Sarah be flexing kegels now that she’s team lead.”