Shit Whiff Share definition Flag SHIT WHIFF - The intense smell of SHIT as you pick or scratch your nose after getting Nail Fudge Following a trip to the toilet where you unknowingly gain some "Nail Fudge" and before realising it you pick your nose and receive a SHIT WHIFF Shit Whiff by ikika October 26, 2011 Get the Shit Whiff mug.