noun
Colloquial, familiar term used by a wife to refer to her own husband, often with affectionate or playful tone. Not used to refer to someone else's husband.
うちの旦那氏は今日も遅くなるって。
My hubby says he'll be late again today.
旦那氏が作ってくれたご飯、めっちゃ美味しかった！
The meal my husband made for me was super delicious!
夫 is the neutral, formal term for husband. 旦那氏 is much more casual and familiar, used mainly in informal contexts.
Formed from 旦那 (husband, master) and the polite suffix 氏 (Mr./Ms.), used here in a playful, familiar way by wives to refer to their own husbands.