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• Ah shit I didn’t think of a title by tapiocapearl (insertobscurereference)

  Fandoms: Undertale (Video Game)  

  • Explicit
  • No Archive Warnings Apply
  • M/M
  • Complete Work

  29 Nov 2025

  Tags

  • No Archive Warnings Apply
  • Sans/Sans (Undertale)
  • Sans (Undertale)
  • Sans Ensemble (Undertale)
  • Dreamtale Nightmare Sans (Undertale)
  • Dreamtale Sans | Dream (Undertale)
  • Alternate Universe - Dreamtale (Undertale)
  • Dreamtale Nightmare Sans/Dreamtale Sans | Dream (Undertale)
  • Ah shit how the fuck do I tag porn. Ugh
  • Rereads my own writing to check what I need to add
  • Sadism
  • Masochism
  • Orgasm Delay
  • Size Difference
  • Making Out
  • Manhandling
  • Bad Dirty Talk
  • Rough Kissing
  • Rough Sex
  • i think???
  • Ecto-Vagina (Undertale)
  • Vaginal Sex
  • Penis In Vagina Sex
  • Ecto-Penis (Undertale)
  • Ecto-Genitalia (Undertale)
  • the author has the sense of humour of a 12 year old. Haha penis in vagina sex so funny
  • Butterflies
  • Teasing
  • Wet Dream
  • Wet & Messy
  • Like very very extremely subtle mild cannibalism notes? Just a hint of it
  • dream actually just wants nightmare to eat him. I think that’s what we can take away from this.
  • Cuddling & Snuggling
  • Nightmare being fucking affectionate for once
  • but still a bitch
  • Age Difference
  • Not that I mention their age gap at all ever but it’s still there and the knowledge definitely makes it hotter right
  • Incest
  • Sibling Incest
  • Brother/Brother Incest
  • Large Cock
  • I guess??? Look at me writing very bad not good shameless porn and then blushing at adding the tags. tell em what the fuck
  • Restraints
  • Pining Dreamtale Sans | Dream (Undertale)
  • Implied/Referenced Dubious Consent
  • Dream’s stupid big brother kink
  • Unfinished wip

  Summary

  “It’s embarrassing,” Dream wants to say, voice shaking through Nightmare’s fingers. His hips buck into Nightmare’s touch, and his sockets heat up in his frustration.
  “It’s just me,” Nightmare answers, like Dream said anything at all. “What’s there to be embarrassed about?”

  Language:

  English

  Words:

  920

  Chapters:

  1/1

  Comments:

  14

  Kudos:

  69

  Bookmarks:

  4

  Hits:

  784