Diddlesniff 

The act of fingering pussy or ass then smelling your finger to see if it is clean enough to fuck.

I tricked with a boy and when I got him home I had to send him to the shower after he failed the diddlesniff test.

Diddlesniff by Bee See January 31, 2008

Diddlewhiff 

To fingerblast a girl and force someone to smell your fingers.

Anthony: I'm so pissed, I just diddlewhiffed Jason's fingers after he fingerfucked that random girl.
Kyle: Me too, it smelled like saltwater and cabbage.

Diddlewhiff by UCFPhi March 12, 2010