A clump of excrement formed in the tangle of one's rectal fuzz from the coalescence of two or more smaller dingleberries. This species of fecal deposit is far more devastating than its well-known cousin and has been known to clog up an entire anal pathway, necessitating emergency extraction. The technology required to produce dingle fusion was first achieved by the Nazis during WWII under the top-secret covert operation Pootonium.