One big happy family. When it comes to parenting, Colin Jost is willing to go above and beyond to look after the son he shares with wife Scarlett Johansson.
“Colin is an extremely hands-on dad, he always makes a big fuss over little Cosmo,” a source exclusively revealed in the latest issue of Us Weekly about the Saturday Night Live star, 40, adding that he “always makes a point to pitch in” and allow the Black Widow star, 37, to rest.
Jost is also “great” with his…