After their victory, the Turtles are celebrating and partying. Just before the episode ends, Leonardo is dancing on a white mat and doing the moon walk. It cuts to a higher angle and suddenly the white mat vanishes.
At the very end of the episode, a squirrel drinks some mutigen and then suddenly looks back at the camera suddenly in a dramatic fashion. This is a reference to the" Dramatic Chipmunk" meme -the squirrel moves in the exact same way with similar music.