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imdfantom t1_j62e4e3 wrote

Reply to comment by lobo1217 in Why is “reverse cowgirl” illegal in Alabama? by Disastrous_Onion_411

Yeah, sister and grandma are in conflict.

Sister implies that your father is your mother's father too.

Grandma implies you mother is your father's mother too.

Schroedinger's parentage I guess.

Edit: we are only talking about genetic relatives here, no legal loopholes please, these don't count as relatives for the purposes of this scenario

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Korchagin t1_j62t9c5 wrote

It works if you accept somewhat weak meanings:

Mom - mother, grandma - grandfather's wife, (half) sister - grandfather=father, aunt - grandfather is her mother's brother.

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Motokorth t1_j62sev9 wrote

Dad knocked up your sister, now she is your sister and mother. Then she married her grandfather, so now your grandmother

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imdfantom t1_j62vnq0 wrote

Eh, not really satisfying tbh.

If you accept this definition of grandmother, the situation could be entirely not incestous.

A man adopts an adult woman, then she adopts him, then they are both adopted by a third person. Then the original two adopt you.

The conditions are satisfied without any incest.

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JaggedTheDark t1_j67bjsv wrote

If your father and mother divorce, and then dad marries grandma on mom's side, and then mom marries grandpa on dad's side it's possible.

Genetically impossible, legally it's weird as fuck.

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