When a guy or gal has farts while he/she has a testicle in their behind. A wooden spoon is commonly used to insert said testy into said behind.
You are having anal sex with your girlfriend. You use a wooden spoon to insert a testicle into her behind. The rush of air into the rump causes gas that she passes out passed your nut. When this happens it is a Fluffer Nutter
by Latvian Fin August 04, 2011