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.
Yes.
"Before making big claims about helping the community, let's see if he's willing to put his money where his mouth is and donate to the cause."
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
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.
I have not heard this idiom before. Perhaps you heard "Put to death" which means to kill.
"Put your heart into it" means to put as much effort as possible into something.
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.
To include an idiom in an example sentence, simply incorporate the idiom naturally into the sentence to convey a figurative meaning. For example, "She had a chip on her shoulder" is an idiom meaning she was easily offended or held a grudge.
Show your better side, be the best you can be
I am not aware of this idiom. Supposedly, it is something that occasionally shows up in a fortune cookie. There is no known idiomatic meaning; it's just something humorous to put into a cookie.