The art of cupcaking oneself. When emitting a particularly pungent fart, one must cup one's hand around said flatulance, then release the aroma into the face. Doing it to someone else would simply be a cupcake, doing it to yourself would be a self-cupcake. This way you can unleash the true smell upon yourself.
Shit, I had eggs last night! I'll self-cupcake to see if I can smell them!