When Zack Snyder challenged his Watchmen women Malin Akerman and Carla Gugino to the ALS ice bucket charity challenge, he didn't tell them to make out. They decided to do that all on their own.
(They only play mother and daughter in the movie, so it's totally not creepy, right?)
Presuming that they also donated to the charity, I think the video is now officially the best movie Zack Snyder has ever been responsible for. If Sucker Punch had been this short, I think more people would have liked it.