Because you'’re being DUMB.
The Big Bang Theory Season 12, Episode 3
Uh, none of the sci-fi shows
I watch are DUMB.
The Big Bang Theory Season 12, Episode 2
I gotta go back to dating DUMB guys
from the gym.
The Big Bang Theory Season 3, Episode 17
You're not gonna make
some DUMB joke
The Big Bang Theory Season 7, Episode 12
She's a DUMB slut, really,
but a lid for every pot.
Game of Thrones Season 2, Episode 1