after exposing himself to her

[GoodTaste]

Lakota Man tweeted (click):

This story gets creepier by the minute: Elon Musk, who says he advocates for “free speech” — paid a SpaceX flight attendant $250,000 to keep her silent, after exposing himself to her.

"After exposing himself to her"? I am not sure what it means.
What does it mean?

 

[Rover_KE]

1. Idioms expose oneself, to exhibit one's body, esp. one's genitals, publicly in an immodest or exhibitionistic manner.

(Macmillan)

Slang: flashing