People that say they’re tough tend not to be very tough in the end.
Actually tough people don’t want it put about that they’re tough before it’s needed. The less everyone knows, the better. If everyone knew you were tough, it would kill the advantage that toughness gives you.
That’s what you learn on the playground, and you learn it pretty early.
Don’t be afraid of the tough guys. Be afraid of the quiet guys that don’t flinch.