Possibly one of the greatest expressions ever. Used to show how much someone likes a concept or thing.

Synonyms include: Sweet, nice, kickass, all right, excellent, etc.

When something smells bad, as in a dumpster or outhouse, but has a tinge of something a little extra that's almost pleasant. Think of the smell when driving past a cow pasture or of rotting fruit in a garbage can full of trash or even a Honey Bucket that just had chemicals added to prolong the life of its use rather than empty it.