At first i thought it was just an acting. They cant be this stupid, but they should quit acting. Spoiler: Its no act. These people are really really stupid...
They don't act stupid though , their awsome and cool bro , I think why they're become stupid is because they lots of fun , they push their self to the limits , and their sense of humor though. And to be stupid is awsome though hahha , lots fun and thrill bytheway.