There is an old saying.....

"Stupid is as stupid does."- which means you are what you DO.
Disclaimer: The below are not in reference to anyone, thing or person- merely a feeling in a moment in time.....that and I am crabby uptight booger head right now.
Don't like it -don't read it.
Here are some other old sayings:

"Two things are infinite: the universe and human stupidity; and I'm not sure about the universe.”
― Albert Einstein

“If a cluttered desk is a sign of a cluttered mind, of what, then, is an empty desk a sign?”
― Albert Einstein

“He who stands for nothing will fall for anything.”
― Alexander Hamilton

"People demand freedom of speech as a compensation for the freedom of thought which they seldom use.”
― Søren Kierkegaard

“I'll take crazy over stupid any day.”
― Joss Whedon

“You have attributed conditions to villainy that simply result from stupidity.”
― Robert A. Heinlein, The Green Hills of Earth

“You are not entitled to your opinion. You are entitled to your informed opinion. No one is entitled to be ignorant.”
― Harlan Ellison

“In politics, stupidity is not a handicap.”
― Napoleon Bonaparte

  “Stupidity isn't punishable by death. If it was, there would be a hell of a population drop.”
― Laurell K. Hamilton, The Laughing Corpse

“Never underestimate the power of stupid people in large groups.”
― George Carlin

“The two most common elements in the universe are Hydrogen and stupidity.”
― Harlan Ellison

“Whenever a man does a thoroughly stupid thing, it is always from the noblest motives.”
― Oscar Wilde, The Picture of Dorian Gray

“Honestly, if you were any slower you'd be going backwards.”
― J.K. Rowling

“He had just about enough intelligence to open his mouth when he wanted to eat, but certainly no more.”
― P.G. Wodehouse

“Mary wished to say something very sensible, but knew not how.”
― Jane Austen, Pride and Prejudice

“Stupidity is the same as evil if you judge by the results.”
― Margaret Atwood, Surfacing

 “Evil isn’t the real threat to the world. Stupid is just as destructive as Evil, maybe more so, and it’s a hell of a lot more common. What we really need is a crusade against Stupid. That might actually make a difference.”
― Jim Butcher, Vignette

 “To be stupid, and selfish, and to have good health are the three requirements for happiness - though if stupidity is lacking, the others are useless.”
― Julian Barnes, Flaubert's Parrot

“There is more stupidity than hydrogen in the universe, and it has a longer shelf life.”
― Frank Zappa

 “I've learned one thing, and that's to quit worrying about stupid things. You have four years to be irresponsible here, relax. Work is for people with jobs. You'll never remember class time, but you'll remember the time you wasted hanging out with your friends. So stay out late. Go out with your friends on a Tuesday when you have a paper due on Wednesday. Spend money you don't have. Drink 'til sunrise. The work never ends, but college does...”
― Tom Petty

“Far be it from me to ever let my common sense get in the way of my stupidity. I say we press on.”
― Sherrilyn Kenyon, Infinity

 “Beauty fades, dumb is forever.”
― Judy Sheindlin, Beauty Fades, Dumb is Forever

 “If it is stupid but it works, it isn't stupid.
(a Shin'a'in saying)”
― Mercedes Lackey, Owlknight

 “Anger is stupid, and stupidity will kill you more surely than your opponent's blade.”
― Patricia Briggs, Dragon Bones

“Talk, talk, talk: the utter and heartbreaking stupidity of words.”
― William Faulkner, Mosquitoes

 “All the other children at my school are stupid. Except I'm not meant to call them stupid, even though this is what they are.”
― Mark Haddon, The Curious Incident of the Dog in the Night-Time

“Nowadays what isn't worth saying is sung.
(Aujourd'hui ce qui ne vaut pas la peine d'être dit, on le chante.)”
― Pierre Augustin Caron de Beaumarchais, Le Barbier de Séville

 “[In the Universe it may be that] Primitive life is very common and intelligent life is fairly rare. Some would say it has yet to occur on Earth.”
― Stephen Hawking

“Never ascribe to malice that which can adequately be explained by incompetence.”
― Napoleon Bonaparte

“Sometimes a man wants to be stupid if it lets him do a thing his cleverness forbids.”
― John Steinbeck, East of Eden

“What is it you most dislike? Stupidity, especially in its nastiest forms of racism and superstition.”
― Christopher Hitchens, Hitch-22: A Memoir
 “Irony is wasted on the stupid”
― Oscar Wilde

“Talk sense to a fool and he calls you foolish.”
― Euripides, Bacchae

“We keep on being told that religion, whatever its imperfections, at least instills morality. On every side, there is conclusive evidence that the contrary is the case and that faith causes people to be more mean, more selfish, and perhaps above all, more stupid.”
― Christopher Hitchens

“I've always believed that a person is smart. It's people that are stupid.”
― Marilyn Manson, The Long Hard Road Out of Hell

"Some scientists claim that hydrogen, because it is so plentiful, is the basic building block of the universe. I dispute that. I say there is more stupidity than hydrogen, and that is the basic building block of the universe.”
― Frank Zappa

“If your brains were dynamite there wouldn't be enough to blow your hat off.”
― Kurt Vonnegut, Timequake

“If you're gonna be stupid you gotta be tough.”
― John Grisham, The Testament

“The more stupid one is, the closer one is to reality. The more stupid one is, the clearer one is. Stupidity is brief and artless, while intelligence squirms and hides itself. Intelligence is unprincipled, but stupidity is honest and straightforward.”
― Fyodor Dostoyevsky, The Brothers Karamazov

“The only victories which leave no regret are those which are gained over ignorance.”
― Napoleon Bonaparte

“Longbottom, if brains were gold, you'd be poorer than Weasley, and that's saying something.”
― J.K. Rowling

“A stupid man's report of what a clever man says can never be accurate, because he unconsciously translates what he hears into something he can understand.”
― Bertrand Russell, History of Western Philosophy

“Those who never retract their opinions love themselves more than they love truth.”
― Joseph Joubert

“He was stupid. If I killed everyone who was stupid, I wouldn't have time to sleep.”
― Tamora Pierce

“Can`t you see that I`m only advising you to beg yourself not to be so dumb?”
― Titus Petronius Niger

“I have defined the hundred per cent American as ninety-nine per cent an idiot.”
― George Bernard Shaw