hi,
please, is there an expression in English to mean something stupid and embarrassing that shouldn’t have been said?
-She’s hot, isn’t she?
-C’mon, she’s my sister!
thanks.
There is the idiom “put one’s foot in one’s mouth”.
From the American Heritage Dictionary of Idioms:
“Jane put her foot in her mouth when she called him by her first husband’s name.”
Well, maybe I am weird but why do you want to learn this expressions ? WHat advantage will you have from learning them ? You should concentrate on waht’s important from the English language . You should try to learning things such as gramar pronociation and other things like this. Anyway good luck with your question.
PS : Sorry 4 the off-topic ;
“Faux pas” can also be used. It’s actually French, but is used in English. Pronounced roughly “FOE pah.” To make a faux pas.
Example: “Bill made a faux pas when he told Tom that Teresa was sexy. He didn’t know that Teresa’s Tom’s sister.”
Idioms add to the fun of a language. Grammar is, well, dry. Idioms, proverbs and figures-of-speech keep things fun and help motivate learning!
They also provide opening lines to get someone’s attention. For example, instead of saying “Bill made a fool of himself when he did x and y,” you could say “Did you know? Bill made a faux pas the other day.” This usually gets someone’s interest. Their response could be, “Oh, really? What happened? What did Bill do now?” 
Cheers.
Hi, Amy
Are you familiar with this expression: put one’s foot in it?
According to my dictionary it is a British expression and I wonder if you use it in America…
Thanks!
Hi Alex
Yes, we use the expression that way here, too. It is basically the “short” form of the same expression (i.e. everybody knows what “it” means). 
You’ll also hear variations of the expression such as this:
“Open mouth, insert foot.”
:lol:
.
Hi,
The extended expression to describe serial perpetrators of faux pas is: Every time he opens his mouth, he puts his foot in it.
Alan
hi guys
You could also say it was a “slip of the tongue”.
My Dad used to create his own little unique phrases, and I like the one he uses for this situation; s/he has a silver tongue with a rusty tip. :twisted:
You can also call it a gaffe.
MrP