have skin in the game
v. phr.— «The value of homeownership, then, has increasingly shifted to the home’s likelihood to rise in value, like any other investment. And when investments go bad, people tend to walk away. “When people don’t have skin in the game, they behave like they don’t have skin in the game.”» —“Facing Default, Some Walk Out on New Homes” by John Leland New York Times Feb. 29, 2008. (source: Double-Tongued Dictionary)
I have a hunch that this is a throw back from the ocean of pornography.