When sitting in a room with John Cena and Keegan-Michael Key, the conversation can go anywhere, so long as you have a star to guide you. With their latest film, Paramount’s family comedy Playing With Fire, containing a strong thread of action that draws the animated series My Little Pony: Friendship Is Magic into a good portion of the movie’s narrative, it felt like the atmosphere was ripe for some my Little Pony talk. So I went for it. You're welcome.