it's only gay if we kiss (so we should)

my secondborn (my parents)

7/10

sounds vaguely historical but in the way that I'm going to be sent off to war to prevent a succession crisis

potentially confusing to the listener bc the average conversation has little relation to birth order

my sister's, [name] (my aunt)

9/10

direct and to the point!

still very clear about what our family relationship is. I think we can do away with many nouns if this is any indication

my young adult child (my mom)

4/10

it's giving "20 year old minor"

I promise you can just say my kid. it's ok I don't mind strangers thinking I'm like 5 bc that would make me a prodigy for doing stuff like my laundry and dishes in one day and honestly I could use that kind of support

my liberated one (my grandma)

10/10 THAT'S WHAT I'M TALKING ABOUT

completely unclear what my relationship actually is to her. her personal oracle perhaps?