Definitions by Your MOM!

left nut 

n. a part of one's anatomy that one would sacrifice to experience something exceptional

I'd give my friggin' left nut to see that shit!

left nut by Your MOM! December 16, 2002

tough 

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.

tough by Your MOM! December 16, 2002