adj. excellent, first-rate;
used as a positive description of someone or something;
synonyms include cool, hot, tight, bitchin', sweet, awesome, pissa, hip, rad etc.
Yo, that's mad tough, yo!
Your car looks friggin' tough.
Tough, yo, I'm down.
Father: No! It doesn't take much grit to throw a punch or smoke a joint, but it takes a hell of a lot to work yourself to death for a sociopathic boss and come at 2:00 a.m. every night without complaining! I'm the tough guy, I'm the one with grit!!!!!