Cock Gravel Share definition Flag The third stage of Kidney Stones. The second stage of Bladder Rocks. Number one cause of Dick Ache. When Timmy reached Level 12.2256 his Bladder Rocks evolved into Cock Gravel. Cock Gravel by Bob Korea March 19, 2005 0 0 Get merch Get the Cock Gravel mug. Buy Now — $32.95 See more merch