and Colin Jost , choosing to raise their son Cosmo, now two years old, away from the public eye. However, the head writer, 41, couldn't stop himself from gushing over his young son during his latest appearance on the iHeart Podcast . He revealed that his favorite thing to do with his toddler was go swimming, a passion he shared as well.

"One thing that's really important with [Cosmo] is I take him swimming a lot whenever I can – like pool or ocean." Colin continued: …I didn't always love the competitive part of swimming, but I did love being in a pool and I'm very happy around water all the time. And that's something I'd like to share with him in different ways.

" The star also spoke about the bond he shared with his late grandfather, who was once their neighbor and got to spend some time with Cosmo, who is partially named after him, before his passing. "My grandpa lived next door and he really helped to raise me," Colin shared. He continued: "His middle name is my grandpa's name and [Cosmo has] the spirit of a lot of the great things in my grandpa, a curiosity that my grandpa really had – an outgoing friendliness, an ability to go talk to anyone and engage, and really be curious about them, and a real joy and appreciation for life, like a deep gratitude.

" The co-anchor shared, on a more personal note, one of the final words of advice he'd received from his dying grandfather, adding: "One of the last things he said to me, on his deathbed, were 'Don’t worry, I'm okay'.".