It's a way to say stupid in an comical sense
Aw man he's such a dum-dum, he's stchewpid
Derived from the British slang word "schewpid". Catchy or teasing way to day someone is stupid or referred to as a dummy.
P1:"DID YOU HEAR ABOUT NATHAN? He's Stchewpid "
P2:"YES I DID, HE'S A DUMMY. (LOL)"
EXAMPLE 2
P1:"AYO BRO, WHAT'S THE DIFFERENCE BETWEEN 2^2 AND 2×2?"
P2:"I DON'T KNOW, Nothing"
P1:"BRO YOU STCHEWPID, IT'S THE POWER"