The incredibly handsome Zac Efron joined Ellen for a game of "Heads Up!"... and things got a little naughty. 

You can get "Heads Up!" for your iPhone or Android in the App Store  and Google Play Store!
"Heads Up!" via iTunes: http://ellen.tv/Heads-Up-iTunes
"Heads Up! Pictures" via iTunes: http://ellen.tv/Heads-Up-Pictures-ITunes
"Heads Up!" via Google Play: http://ellen.tv/Heads-Up-Google-Play