Put up or shut up

Meaning: to demand that someone prove that what they are saying is true (see put your money where your mouth is)
Example: When the girl said that she could beat her friend at the game, her friend said, Put up or shut up!
See this Idiom in a story: Sports: Adam Learns About Sportsmanship

Submit an Image

What country are you from?

How old are you?

put up or shut up