As T'Zirk, himself a t'jat uhasil practitioner, explains in volume 4 issue #28, the phrase t'jat uhasil means "soft kill" in the ancient Triceraton language. He tells Michelangelo that the turtle and his brothers exposed a weakness in traditional Triceraton close-quarters combat—its overreliance on brute strength to overwhelm an enemy. Based on a heavy analysis of that fateful day's Tri-Sports Arena footage, Triceraton martial artists were able to identify and learn from the turtles' ninja techniques to improve their own fighting, and t'jat uhasil was the end result of this study.