1. adj. Someone who talks amazing amounts of shit but never backs it up. But, when put in the position to have to back it up, will triumph gloriously resulting in more shit talking, thus perpetuation the cycle.
2. adj. An extrordinarily tough person.
Jesus Todd is bastard tough! He talked shit on Matt all night and when Matt threw down, Todd kneed him in the balls and kept talking shit.
2. Marv from "Sin City"