Do they really work doc?

[SoylentOrange]

Originally Posted by Denny

Elaborate? I'm not native english and don't understand that expression.

I was agreeing with you, asking Yermom to back up his words with deeds/proof.

"Put your money where your mouth is" is basically saying to someone who says something is simple/easy for them to do, "Okay, if it's so easy, let's make a bet on it." See also: "Put up or shut up."