It’s happened to all of us at one time or another. Sometimes, our brains just shut off while we’re speaking and we end up saying almost unbelievably stupid things — cringeworthy and idiotic things that we come to be horribly ashamed of and wish we could take back.

After all, Albert Einstein, himself certainly no dummy, is rumored to have once said, “Two things are infinite: the universe and human stupidity; and I’m not sure about the universe.”

And in this spirit, a redactor named ZakLorinator recently started a threat in which he asked people, “What’s the dumbest thing someone has told you?”

We’ve compiled a list of some of the people’s responses to this question below.

Keep in mind as you read that when people are accused of saying something stupid, they often double down and say even more stupid things. Believing that they are personally being attacked, they rush in to defend themselves and end stepping in it yet again.

Here Be Dragons

The difference between a dinosaur and a dragon is pretty straightforward: One is a real creature that existed millions of years ago, and the other is a figment of the human imagination which is used to populate fairy tales.

One would think that educated people would know this. In fact, one would think that one wouldn’t even need to be particularly educated to know this.

Well, one would apparently be wrong. One Redditor responding to ZakLorinator’s thread recounted a story of how a woman he met while working at a museum was telling everyone that dinosaurs couldn’t have existed because no animal can breathe fire. The kicker? This woman was a law student.

It’s All a Numbers Game

Another respondent told the story of how a hilariously innumerate nursing student told him that she thought math wasn’t real. “Like, if I said 2+2+5, it would be true.”

Thank God she wasn’t an engineering student.

Pseudo-intellectual Nonsense

Those who have heard of the Sokal Hoax know that there are some academic journals, particularly those associated with critical theory, that often publish completely ridiculous and made-up nonsense.

One story told by a respondent about someone who said to him that, “The spork is the devil’s utensil because its the amalgamation of the masculine fork and the feminine spoon, trying to blur gender lines in society” certainly fits into that pseudo-intellectual category.

The Stupidity in Our Stars… Or In Ourselves?

One story told by a man who went on a date with a young woman who was interested in astrology has to be read to be believed. When he asked her whether she’s like to have diner at a certain restaurant, she refused because her horoscope warned against it.

Trying to reassure her, the man told her that horoscopes in newspapers are probably written by local nobodies.

She insisted that allegedly trained and professional strollers write horoscopes. When he pointed out that there probably aren’t enough astrologers to go around for this, she replied that astrology was “science, and it’s illegal to lie about science. They would revoke that astrologist’s license.”

Needless to say, that relationship wasn’t written in the stars.