1. Not having enough grip
2. The state of one's fingers after they have fingered a lady and she creamed all over them.
1. Damn, that football playerdropped the ball. That bastard's butterfingers cost me 10 grand.
2.Wow! That girl creamed all over my hands and game me a massive case of butterfingers.
The act of capturing a fart in ones hand and then holding it over another's (or own, if desired) mouth until victim breathes, leaving them with the taste of flatulence in their oral cavity.