United Kingdom, March 7 -- Colton Underwood joked that his baby boy could become an electrician.

Little Bishop, 16 months, has developed a fascination with light switches since TV personality Colton, 34, and his 43-year-old husband, political strategist Jordan C. Brown, welcomed him into the world via a gestational surrogate.

The Traitors US star Colton told People: "Currently, he's obsessed with light switches. So yeah, I don't know if he's going to be like a future electrician or what we got going on, but he loves light switches."

And although the tot is growing up fast, he still never fails to brighten up his parents' days.

Colton added: "We have molars growing in, so there's drool everywhere, open-mouth kisses. I truly call him my...