steepedncontext’s review published on Letterboxd :
Burps "M-Morty. This is a parallel universe where everything is exactly the same, b-but the fireworks here explode flat, Morty! D-do you understand what I'm" buuuurp "saying, Morty? If you view the firework from the right angle, it looks like a f*cking DISK, Morty!"
"W-what are you talking about, Rick?"
"Gunpowder works differently here, Morty! This dimension's physicists have been stumped for YEARS, Morty!"
"Aw geez Rick, why would you bring me to a place like this?"
But then the episode ends and we never find out why.