The Turtle Terminator (S03E37)

Irma is kidnapped by Bebop and Rocksteady and is replaced by a robot that looks just like her that is programmed to eliminate the turtles. However, things seem a bit wrong as whenever the word "turtle" is said it instantly "zaps" whatever causes the word to be said with a laser. Meanwhile, the turtles try to rescue Irma from the Shredder's clutches. (iTunes)