Pillowcase full of cakemix 

Fat flabby skin located behind the tricep.

She's huge, the back of her arms are like a pillowcase full of cakemix.

Pillowcase full of cakemix by Pancakesoup May 27, 2010

Pillowcasin'

V. To take the rest afforded by a suspension of voluntary bodily functions and the natural suspension, complete or partial, of consciousness; cease being awake. Or just a right way to say sleeping.

TBaww got really excited when she saw Hacob pillowcasin' on top of her big pink dog.

Pillowcasin' by Hacob SPeni February 8, 2007

pillowcase 

1. narcoleptic

2.A ditsy blond who acts like a three year old child.

3.A senior citizen who's addicted to fabric.

1.Granny turned into a real pillowcase.

2.look at that pillowcase sleeping at the wheel.

3.jennie is such a pillowcase she forgot her make-up again.

pillowcase by Acid303404 May 19, 2005

Pillowcaseless 

A bare pillow with out a pillow case.

The guest bed was Pillowcaseless with the bare pillows laying on top of one another.

Pillowcaseless by zizithecat July 30, 2019

Pillowcased 

a pillowcase is on a pillow

i pillowcased the pillow

Pillowcased by Noodleyp December 22, 2016

Arse like a pillowcase full of weasels 

A posterior which is large, aesthetically grim, structurally unsound and generally fucking horrible.

"Seen the state of Carol? She's got an arse like a pillowcase full of weasels!"

Arse like a pillowcase full of weasels by Tushington Bear November 28, 2017

Shit in a pillowcase 

It’s when someone (me, I’m doing it now as I type this, yeah) shits in Sandy’s pillowcase.

I shit in a pillowcase. Matter of fact, I’m still currently shitting in Sandy’s pillowcase.

Shit in a pillowcase by Plinko59 December 16, 2018