Last year, on Howard Stern, he shared that he grew up with a bad stutter, and somehow, the word “motherf*cker” helped to cure it. (mostly, apparently he can still suffer from it).
He told Stern: “I stuttered really, really, really bad for a long time…to the point that I stopped speaking for, like, almost a year in school.”
He’s not sure why it works, “But it just does. It clicks a switch that stops the d-d-d-d, b-b-b-b.” SLJ practiced breathing exercises and improved his stutter over time.