r/TwoSentenceHorror 3 hr. ago masiakasaurus On the last day I told my double, "only one of us be coming out alive." And I tied his umbilical cord around his neck.

r/TwoSentenceHorror 3 hr. ago jdyerjdyer ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ↓ˢᶜʳᵒˡˡ ᶠᵒʳ ˢᵗᵒʳʸ↓ Everyone thinks the new baby is so precious that they completely forgot I exist. Big brother is about to be an only child, again.

r/shortscarystories 1 day ago CBenson1273 One and Only I dislike my twin brother. There. I said it. I know you may be shocked. “How can you despise one who was literally created with you, who has been with you your entire life?” Trust me. You can. Like how he steals so much of my mother’s attention. Every moment I want to spend with her, he’s there. Taking away her time. Her attention. Her affection. Every time I eat, he’s there. Every time I sleep, he’s there. Every time she sings to me, he’s there. You have no idea how much I long for my own space, my own life, but it just isn’t possible. And my father is just as bad. He spends time with me, but it’s never just him and me - we always have to do everything together. There’s only so much family time one can take. Don’t get me wrong, my parents are good people, they are literally the reason I exist. And it isn’t like they are choosing him over me - they do everything possible to show us that they love us both equally. I know they are doing their best under circumstances they weren’t really prepared for. I get that space is limited and money is an issue, and I know having two of us doesn't make it any easier though they would never complain where they thought we could hear. I don’t blame them. I blame him. But what choice do I have? I can’t expect them to turn their backs on him. They aren’t those kinds of people - they love us both too much. I know they’d do anything they could to protect us both. But that’s the problem. I don’t want them to protect us both. My whole life has been like this, and if I don’t do something, I just know the rest of my life will be the same - compromising, giving things up, always having to share my parents’ love and affection, to share everything. I don’t want to share. So I’m going to make sure I don’t have to. I can feel you judging me, asking what kind of person would even contemplate this. You don’t live my life and you don’t know what I’ve been through. It’s been months of this and it shows no signs of ending anytime soon. So I’m ending it. I’ve thought this through and I have a plan. It’s guaranteed to work. And if I do it correctly, no one will ever suspect me. I know my parents will grieve for a while, but eventually they’ll move past it and see that the three of us are all we need. All we ever needed. So I act. A quick turn, a subtle shift, and then I wait. A few minutes and it’s over. And then there was one. It’s amazing what an umbilical cord around a neck will do.

zygosity Monozygotic: One (identical). Dizygotic: Two (fraternal). Trizygotic/Polyzygotic: Three or more oocytes. Sesquizygotic twins (semi-identical twins) ± share 100% of their maternal DNA but only 50–78% of their paternal DNA. The singular oocyte is fertilised simultaneously by two male fertiliser's and divides into two viable embryos Terms for multiple births are primarily derived from Latin number prefixes combined with the suffix -uplet. 1 offspring: Singleton, "unuplet" or "monuplet" 2 offspring: Twins, Dituplet, Duplet (from the Latin duo) 3 offspring: Triplets 4 offspring: Quadruplets (also called "Quads") 5 offspring: Quintuplets (also called "Quints") 6 offspring: Sextuplets, Hexaplet Hexa- (Six) 7 offspring: Septuplets, Heptaplet Hepta- (Seven) 8 offspring: Octuplets 9 offspring: Nonuplets, Enneaplet Ennea- (Nine) : Current Survivors (2025) The world record for the highest number of siblings from a single birth to survive infancy is nine (nonuplets) 10 offspring: Decaplets (or Decuplets) 11 offspring: Hendecaplet Undecaplet (or Undecuplets) 12 offspring: Dodecaplet Duodecaplet (or Duodecuplets) 13 offspring: Tredecuplets (Alternative: Triskaidecaplet Tredecaplet) 14 offspring: Tetrakaidecaplet Quattuordecaplets 15 offspring: Quindecuplets (Alternative: Pentakaidecaplet Quindecaplet) : The largest reported number of human fetuses in a single womb was 15 in 1971 (quindecaplets), but they did not survive 16 offspring: Sexdecaplets, Hexakaidecaplet 17 offspring: Heptakaidecaplet, Septendecaplet, Sepdecaplets 18 offspring: Octdecaplets, Octakaidecaplet Octodecaplet 19 offspring: Nondecaplets, Enneakaidecaplet Novemdecaplet 20 offspring: Viguplets, Icosaplet Vigintiplet (from viginti, meaning 20) 21 offspring: Unviguplets, Icosikaihenaplet 22 offspring: Duoviguplets 23 offspring: Treviguplets 24 offspring: Quatturoviguplets (Icositetraplet) 25 offspring: Quinviguplets 26 offspring: Sexviguplets 27 offspring: Septenviguplets 28 offspring: Octoviguplets 29 offspring: Novemviguplets 30 offspring: Triacontaplet, Trigintuplets (from triginta, meaning 30) 31 offspring: Untrigintuplets 32 offspring: Duotrigintuplets 33 offspring: Tretrigintuplets 34 offspring: Quatturotrigintuplets 35 offspring: Quintrigintuplets 36 offspring: Sextrigintuplets 37 offspring: Septentrigintuplets 38 offspring: Octotrigintuplets 39 offspring: Novemtrigintuplets 40 offspring: Quadragintuplets, Tetracontaplet 41 offspring: Unquadragintuplets 42 offspring: Duoquadragintuplets 43 offspring: Trequadragintuplets 44 offspring: Quatturoquadragintuplets 45 offspring: Quinquadragintuplets 50 offspring: Pentacontaplet, Quinquagintuplets (from quinquaginta) 60 offspring: Sexagintuplets, Hexacontaplet 70 offspring: Septuagintuplets, Heptacontaplet 80 offspring: Octogintuplets, Octacontaplet 90 offspring: Nonagintuplets, Enneacontaplet 100 offspring: Hecatoplet, Centuplets 128: Hecatoicosioctaplet Technical Usage Notes Birth Terminology: In medical contexts as of 2025, Latin-based terms remain the standard (e.g., undecaplets for 11, duodecaplets for 12), though some hybrid terms like decaplets (10) are occasionally used interchangeably with Latin denuplets. ± "Sesquiplet" would theoretically describe 1.5 offspring—a biological impossibility that is instead addressed by the term sesquizygotic to describe the shared genetic state of two individuals. As of 2025, there are only two known genetically confirmed cases worldwide—one identified in the United States in 2007 and another in Australia in 2014 (reported in 2019).