Yes.
You should put your money where your mouth is.
This idiom originates from the late 1700s. People would raise their money to their mouth to demonstrate that they were unsure if something they said or are about to say was/or will be true. By raising their money to their mouth, people felt it would obscure their voice meaning they could backtrack on what they said and claim they said something else if their prediction didn't come to fruition. The idiom is commonly used by fans of sport to demonstrate how unsure they are about the outcome of an game.
"Dunoo" Alex Rider. MI6
Think about this and you can figure it out. If you're talking and bragging, you're using your mouth, right? So the person is telling you to put up or shut up. He wants you to either do something or quit bragging. If you put your money down instead of just bragging about what you're going to do, that's what it means.
It's Put your FOOT in your mouth -- it means to say something embarrassing.
Put Your Money Where Your Mouth Is was created on 2006-09-18.
Actually this is an idiom, it means To misspeak; to say something embarrassing or wrong. ex:- I really put my foot in my mouth during the interview.
It's not an idiom. It's American slang for money, because American paper bills are green (and they fold when you put them in your pocket).
Put your money where your mouth is!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
It originates from rabies. Rabid dogs foamed at the mouth.
affrica (iraq
break a mouth