After Mikey gets trapped in Dimension X to try and save Leatherhead, his brothers come to his rescue, but they discover that their little brother has changed.
Did You Know?
A theremin plays throughout the episode. This is a musical instrument popularly used in sci-fi films and shows in the 1950s, and accentuates the sci-fi feel of this episode. See more
When we kill you, you will no longer be an irritant to our dorsal region.
I think the phrase you're looking for is "pain in the..."