Something imaginary that is also totally lame, stupid, silly or just downright ludicrous. Whether the implication be made for the purpose of comedy or analogy, if it's something that would have been better left unsaid, it's hypopathetical.
"Of course, it's not true, it's a hypopathetical situation. When do any of my scenarios make sense? I hereby declare myself the King of Hypopathetical." -Kenny on his dissertation about how four monkeys with swords could kill a dragon.