1. A situation note entirely going the desired way.
2. Of something which is totally useless.
As the chief engineer watched the new bridge come crashing down on its first opening plunging 100 cars and occupents into the river below, he was heard to comment "This is turning into a pile of stale monkey wank"
You're doing your lady doggy style and just before coming you take your dick out to come on her back. You actually spit a large amount of saliva on her back instead. As she turns round to inspect the glory you come into her face. She'll have no idea how you did it.
My girlfriend was so impressed with the houdini she was not annoyed at all with the pearl earings and necklace she was now wearing.
