Cooper spoke candidly with David Letterman on Wednesday night about all the guys his mother had "hooked up with" in Hollywood. Which, apparently, turns out to be a lot of guys.
"Watching old movies with my mom is a trip," Cooper said. "I'm like nervously eating popcorn like, 'Did you know the third dancer on the right?'"
To which Letterman had the perfect response: "My mom hooked up with Harry Truman."