Nick Kroll is a dad! The 42-year-old comedian and his wife, Lily Kwong, welcomed their son on Jan. 21, the new mom announced Monday on Instagram.In her sweet post, Kwong shared a pic of her and Kroll's baby boy, which was focused on the newborn's feet.«Welcome to the world little one,» she captioned the pic. «Our beautiful baby boy joined us earth side on 1/21/21.