When I was at Warren Truck Plant there was a guy there on the line one day where his "plumber's crack" kept showing... The guy across from him kept asking him to keep it covered as he did not want to see it... The guy kept ignoring his requests and it kept showing... Until the other guy finally got fed up and told him, "If I see that crack again, I'm gonna f*ck it"....
He kept it covered for the rest of the day after that...