by jSalty January 12, 2019

A scenario, often playful and sexual, in which a person forcefully stabs a knife into a mattress and uses it as a sex toy, sometimes as part of an act or roleplay, while their partner or praises them.
The term is heavily inspired by a scene in the Book "Lights out" by Navessa Allen in which a character proposes the idea of riding a knife in a mattress.
The term is heavily inspired by a scene in the Book "Lights out" by Navessa Allen in which a character proposes the idea of riding a knife in a mattress.
Eammon i want you to grab a knife and stab it into the mattress and watch me ride it as you praise me.
Knife in Mattress
Knife in Mattress
by Freaky Def August 10, 2025

by mystikspiralx February 19, 2025

The best type of mattress hands down. Much superior to spring mattresses. Nothing can compare to a foam mattress when it comes to comfort. However when you buy a foam mattress you are also making the statement that sexy time isn't reserved in the bed anymore, this is more of a pro than a con really (vanilla sex = booorinng).
Jane and dane decided to get a foam mattress and did not regret it one bit. However it was impossible to fuck on it, so they did it on the floor instead.
by Mary Mary Quite The Contrarian May 7, 2021

an American mattress store chain founded on July 4, 1986. The headquarters of the company is located in Houston, Texas.
On October 5, 2018, Mattress Firm filed for Chapter 11 bankruptcy. The company planned to break 700 lease contracts by closing 200 unprofitable stores as soon as possible and was considering closing the other 500 stores out of the more than 3,300 it operated at that time. In November 2018, Mattress Firm emerged from Chapter 11 bankruptcy
by SPrice1980 May 20, 2023

“Alex’s laptop melted after loading his 59th mattress comparison tab”
“Matt spent 43,981 hours browsing mattress reviews, triggering an intervention and a Boring Mattress.”
“Matt spent 43,981 hours browsing mattress reviews, triggering an intervention and a Boring Mattress.”
by boringmattress December 18, 2024

u have a cool mattress! its blue and green!
by ihopeudontknowme December 15, 2022
