What is “flex” in Nigerian Pidgin?

verb: To show off.
- Tola just dey flex im new car since he buy am.
  - Tola has been showing off his new car since he bought it.
- Becos yu dey use latest iPhone, yu dey flex am.
  - Because you have the latest iPhone, that’s why you’re showing it off.
verb: To have fun or enjoy oneself.
- Salary don enter. Mek we gó flex for club.
  - My salary has been paid. Let’s go have fun at the club.
- Ha papa get money. Na wai she dey flex with ha friends every holiday.
  - Her father is rich. That’s why she has lots of fun with her friends every holiday.