It's National Siblings Day and Clem has the perfect celebration for Corey... a Going Away Celebration! Yep, Clem has planned for Corey's "alien parents" to come to Earth and take him back home to Planet Zunia. Fake birth certificate? Check! Photoshopped pics of Corey as a baby with his alien family? Check check! Clem has gone all out and Corey is FREAKING OUT! It was nice knowing ya, Corey!