Diet Shasta Cola Share definition Flag n. 1) a poor imitation of other cola beverages; 2) an alternative to drinking your own urine Rather than drink my own urine, I broke down and drank the Diet Shasta Cola. At least I didn't die. Diet Shasta Cola by Daniel Richards February 21, 2004 0 0 Get merch Get the Diet Shasta Cola mug. Buy Now — $32.95 See more merch