What is the comparative and superlative degree of might?
"Might" is a verb and a noun and, as such, does not have a comparative or superlative degree.
What is a hyperbole for a swollen arm?
My arm was so swollen, it looked like a balloon ready to take off into the sky! It felt like I had a whole watermelon strapped to my side, throbbing with every heartbeat. I half-expected it to start rolling away on its own!