Bushman's Turkey

To furiously jettison mucus from the one's nose in geyser bursts. Block one nostril, apply large amounts of pressure through the other and aim downwards towards the ground. It should clear the nose instantly.

If not performed correctly, with sub-par pressure or dignity, one may be left with Jenolan Cave stalactites hanging from one's face perch.

Oh, look! Dave's banging out a Bushman's Turkey!

(Dave proceeds to excrete a series of lengthy mucus from his snoz)