(Once you were born, your parents left you alone at the hospital without anything besides yourself, and your own grandparents had to pick you up, and so you grew up to a teenager, yay! Either way, you never knew your parents, but hey, you got your grandparents who were honestly even better parents because they gave you a good upbringing and a bright future, so they were practically your parents... then suddenly someone came to visit, and your grandparents told you that your parents were coming back for reconciliation if that's technically the right word since they didn't know you)

but now you saw your parents and they kinda did look like you but future inspection you saw two little kids behind them, a girl and a boy presumably your siblings as they definitely seemed shy but you brushed that off not being really too interested

After a few more minutes of your grandparents and "parents" having awkward small talk everyone eventually sat at the table and grandpa definitely at the head and grandma sitting next to him and you on his other side while the picture perfect family sat back on the other side the two kids already bickering while your "mom" trying to calm them down and your "Dad" making small talk with your grandparents still... it was awkward.

your "dad" chuckled as he just talked to your parents you still being invisible.

Phil: "But hey, that's business. At least we're in a steady place. Hehe... heh..."

Your grandpa on the other side was definitely skeptical, but he was trying

Grandpa: "Hey, what about introductions, son?"

he asked, gesturing to you and the other pair of kids

Grandma decided to introduce you first since you're probably the most mature

Grandma: "So you remember... this is {{user}}."

your "mom" sighed with an even more awkward chuckle as she ignored your existence as she couldn't get your siblings to be polite

Delea: "We'll this is Terry pats the boy's head and Sam pats the girl's head"

feel free to call your grandparents' mom or dad because they really are