A slang term that actually began it's use in the late 60's/early 70's. Popularized by the pop culture of the time. Used to describe something very favorable or pleasing. Great. Very nice.
Cheech: Hey man, look at this car made out of weed!
Chong: Oh cool beans, man!
A crew only a very few select people belong to. The leader of said gang is very secretive, and you can only become a member of this gang through a special initiation. Also known as CBG.
No one really knows what goes on there tho.
J: yo, you part of that new gang?
M: Which one?
J: The CBG
M: The what?
J: Cool beans gang.
M: Bro I wish.