“I, (Annoyed Grunt)-Bot” or, “I, D’oh- Bot” is the 9th episode of The Simpsons’ fifteenth season.
While riding bikes with Milhouse, Bart realizes his bike is horrible. He smashes it in order to get a new one. When he and Homer go buy a new one, they realize it needs to be built first. Homer builds it, but when Bart starts riding it, it comes apart. He tells Homer he can’t build anything. Homer tries to prove him wrong by building a robot, but it too falls apart. He remembers something Grandpa said: “If you can’t build a robot, be a robot.” He then dresses up like robot and Bart enters him, not knowing it’s Homer, in the Robot Rumble contest. Homer gets hurt badly during each match, but he takes the pain for his son’s love. When it comes to the final match, Homer has to face a giant robot built by Professor Frink; the robot gets smashed and Homer comes out. Frink’s robot doesn’t smash him because it won’t harm humans.