I remember my dad dealing me about a group of kids that tried to attack one night, and that was their worst nightmare! He broke a baseball bat it front of them, then proceeded to slaughter them to the ground! Fucking tough!
Then when he was riding his motorcycle to Sturgis Rally, he was sidelined by a car and his motorcycle got scratched up. Well, he seen "red" and smashed the car with his hands! Once again fucking tough dude my dad is!
I can tell you things that he had done that are fucking amazing! In the gym he was a powerhouse of steel. But also besides the physical, he had a mental attitude that is pure toughness. You soldier on despite the setbacks, and THAT is what makes you tough bar fucking none!