She 'played/acted dumb' [=pretended to know or understand less than she really did] so we would assign her the easier tasks.
She thinks television is contributing to the 'dumbing down' of America.
Cutting training programs will 'dumb down' the American workforce.
(..) Now, I just need to find a way out of here. Wait, you're not gonna deliver her to her actual parents? Baby doesn't know the difference because babies are dumb. Oh, babies are not dumb. They are super dumb. Babies have a higher level of intelligence than we will ever understand. (..)2016 Storks
(..) but I assume it's lame. I said I'm the most popular person... JUNIOR: Lame! - (WIND HOWLING) - (JUNIOR GRUNTING) Tulip's dumb. There's a reason she doesn't fit in. Ifyou're smart enough to build a plane, then who wrecks one? I'm gonna deliver this package and be back at Stork Mountain in no time. (..)2016 Storks