mouth-breather
n.— «Conversation is also the old familiar college topics with the occasional joke, sometimes racist—these people are very comfortable together—for a guffaw. “They are all stewardesses, and she had blond hair about down to here,” says a mouth-breather, also in a standard gray.» —“South Street Singles” by Sandra Earley Newsday (N.Y.) Jan. 16, 1986. (source: Double-Tongued Dictionary)
Further reading
What if, instead of being an inanimate object, a dictionary were alive? That’s the idea behind a lavishly illustrated new children’s book called The Dictionary Story (Bookshop|Amazon) by Oliver Jeffers and Sam Winston. This is part of a...
A Dallas, Texas, woman and her friends often use the expression All the things to mean something like and whatnot or as a way to signal a kind of mutual understanding, suggesting something similar to the phrase you know. This sense probably comes...