Jabagch
To make someone look like a loser by forcing them to back up their story, like they’re in court.
He said he could eat ten hot dogs in one go. Now he has to prove it or he’s a joke.
She said she could beat up the school bully. Now she has to prove it or she’s a coward.
You said you could juggle ten balls at once. Now you have to prove it or you’re just a fraud.