flex time

Time ostenibly spent in the bathroom (derivative of "to flex" = Pooping) but more to the point spent at other pursuits - video solitare, reading the newspaper, collecting your thoughts, jerking off, or all of the above - while in the stall and/or bathroom. Occurs daily worldwide.

Dave stood, grabbed the crossword puzzle and headed for the bathroom. "I'm going to take some flex time," he announced

time flex

They the real OG for no reason in the middle of a sentence

John Doe:”yall didn’t get this guy like I did before the Kanye collab, unrelated emoji”
John Smith:”doe hittin with that time flex”