A great advice given by someone, which is taken as really helpful. If it's a "million dollar advice", it will be told to next person, and next etc.
someone 1: yo, man we got maths exam tomorrow, that sucks dick and it doesnt even swallow
someone 2: yeah fuck it bro, we gonna write it next time.
someone 1: nibber, that's a million dollar advice , gonna tell my buddies!