Justin Timberlake [1] stopped by The Ellen DeGeneres Show [2] on Friday and couldn't help but gush about his precious son, Silas. After showing off their Trolls [3] Halloween costumes from this year [4], he told the host that his 18-month-old actually shares his musical gene. Not only does Silas dance around the house, but he also knows all the words to his hit single "Can't Stop the Feeling." "He's pretty rad," the singer added. Justin also ended things on a hilarious note when he impersonated Christopher Walken [5]'s famous "More Cowbell" Saturday Night Live [6] skit, further proving that he could easily be a permanent cast member on the show [7].