 Say hello to your parent-sibling, kids. Daddy, can we go over to parent-sibling's house? My aunt's next birthday, it'll be the card to, well, parent-sibling Deanne. There you go. Not Aunt Dee. No, that's gone. Yep. What happens to parent-sibling Mike? No longer Uncle Mike. I have very fond memories of my late parent-sibling, Helen.