It is impossible to give a factual answer because the question asks for an opinion,but a list of some pretty silly people can be given.
Weird Al
Monty Python(a group)
Love
The Arctic
Nope...it's the stupidest thing in the whole world to..they'd make so much money!
spot spotnick
aidil jkr
sbdacashcsh means the most stupidest person in the world
Rantanplan
It depends to the owner and how they think of their dog
Ur the most stupidest person in the world!!!!!!!!!!!!!!!!!!!!
There are no perfect rhymes for the word stupidest.
Nuradin Farid is not his real name but his real is actually Durudan darud and he is the stupidest person in the whole universe.
The stupidest rock is the most idiotic rock.