Refers to a situation, cooperative agreement, lucky break, social or intellectual breakthrough, etc. which the speaker finds or considers to be so wonderful, satisfying, relieving, emotionally fulfilling, etc. that it is even better than being merely "sweet". Often said to the provider of the exceptional condition, either to express the speaker's profound joy or to show his unparalleled appreciation for the provider's concerted efforts in accommodating him.
Contractor: Business has been quite slow lately at the heavy-equipment yard, so with a bit of bargaining and negotiating, I was able to get the weekend dozer-rental at a 50% savings, which I'll pass long to you.