Well, that'll happen when Melanie Griffith tells her daughter about the time she gave David Letterman handcuffs. And just when things can't get more squirmsome, Dakota asks "Are you my Dad?"
For those unable to view the video for whatever reason, David Letterman is not Dakota Johnson's dad, Don Johnson is. Yep, him off Miami Vice, that detective thing set in San Francisco from the 90s, and Django Unchained.