Would you be mad if your friend called you stunted?

He’s a supportive friend, the kind that makes you feel it’s okay to be your unedited self around, and we’ve known each other for four years. Okay so what I haven’t crossed off life’s to/do list. No relationship, no children, late thirties, living with family taking care of a 98 year old grandmother with Alzheimer’s. And he calls me stunted.

Whether or not his statement has any truth to it, I’m incredibly hurt and wondering if I need to grow up and do the mature thing and move on, or if it’s time to finally confront someone for the first time in my life when they hurt my feelings?