Conan O’Brien is headed to NYC in November apart of The New York Comedy Festival this year. The late night host found himself on another late night show to get the word out about his upcoming gigs. For his stop on The Late Show, Conan would go on to sit down with Stephen Colbert and reveal a prank by David Letterman that involved a horse. Conan goes to say that Letterman ended up thanking him with a horse following Conan’s kind words to the former Late Show host. Let’s just say Conan got more than he can chew when the horse ended up arriving.