“A badass isn’t someone wears ripped leather jackets, a badass isn’t someone who breaks stuff to look tough, and a badass isn’t someone who fights for the fun of fighting. That’s the definition of a poser. Being a badass is completely different.
Unspoken Rules of Being Badass:
1. First rule of being a badass. A badass does not talk about being a badass. Period.
2. Second rule of being a badass, a badass does not try to be a badass or look tough. A badass simply is a badass.
From the urban dictionary.