Knife in Mattress

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.

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

by Freaky Def August 10, 2025

St. Mattress

worship from bed, usually very loud "OH GOD" repeated a lot

them: religious preference?
me: st. mattress...it's very exclusive!

by thatnoodlyappendage January 1, 2012

mattress music

Mattress Music is music you have sex or dance to.

Mattress Music is Jeremih birthday sex or Bedrock.

by _Tookié_ May 5, 2016

flying mattress

Female flight attendant, usually know to be an easy lay at every destination!

Damn that gal lays more guys than any other 'Slapper' when her plane touches down! a real 'Flying Mattress' that one!

by Jimmy de Bogan March 8, 2024

Fast Mattress

Getting laid as fast as possible.

If you want some fast mattress you gotta use Tinder.

by jSalty January 12, 2019

Flipping The Mattress

A slang for having intense sexual intercourse to a point where there are wet spots on the mattress and you need to flip it.

Mab: Where were you last night?
Funky: Oh we ended up flipping the mattress.
____________
Nassim: Hey girl, what's wrong?
Faeze: It's been so long that i got my mattress flipped 😫😩

by FunkSpunk December 14, 2023

mattress sniffer

A mattress sniffer, someone who hides under a bed in the hope of sniffing their ladies period leaks

Man I'm such a mattress sniffer, last night I hid under the bed with my wife's tampons so she had no choice but to leak her red gushing goodness everywhere

by StretchyRaff November 29, 2016