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

Gave them the mattress pump

To reveal to someone you’re engaged

“I wanted to take her by surprise revealing my ring so i gave them the mattress pump”

by socialelitist666 September 27, 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

mantrabu

complete twat

he is such a mantrabu

by Martino April 1, 2003

mastrminde

To be predisposed to a server case of extreme Paranioa.

Whoa dunt get all mastrminde on me...

by Anonymous July 21, 2003

mantry

When your husband/teenage son/full grown male coworker of legal age fixes/cleans/completes something after which the condition of said thing needing fixed/cleaned/completed looks relatively the same as before they "took care of it". That's mantrying.

Wife: Honey, I thought you were going to fold the clothes while I was away this week . . . . (stares at pile of garments)

Husband: (remote in hand) I did (smiles proudly)

Wife: (sighs audibly) Oh. It was a mantry. Thank you.

by AKMama525 February 10, 2010

Maitron

Someone who is extremely good looking/fit.

Something that appeals to you.

"that boy is proper maitron"

by MGMTwhore April 9, 2010