With David Letterman leaving The Late Show in just a week, Adam Sandler came on the show bearing his heart on his sleeves and a song in his heart that’s out on those sleeves: What we’re saying is he sang a song to honor his favorite host. Sandler’s ode is funny, sappy, has a little dirty joke about Adam Sandler’s mom that makes Letterman groan really loud, plus more — everything you want in a song! Surely this song will go down in history just like “The Hanukkah Song,” except probably a little less because it’s about a person and not a holiday, but probably it’ll go down in history at the Letterman household.