Dib Membrane

A precious boio who needs to catch Zim. Also the son of Professor Membrane and brother of Gaz Membrane.

Me: Dib Membrane is my favorite Invader Zim Character and I love his hair.
Zim Stan: Eww.

by 420Cheesecake October 29, 2020

selectively permeable membrane

A hot girl's vagina.
Very selective on who's dick is permitted through the membrane (her pussy lips.)
Will often deny nervous, non-jock types. The membrane judges largely on physical appearance, not on the pretense of a good personality or wit.

Guy 1- So did you sleep with Elena in the end?
Guy 2- No, she had a selectively permeable membrane.
Guy 1- ... So she turned you down?
Guy 2- Yeah.
Guy 1- Well just say that then!
Guy 2- I needed to make an example for a definition for urban dictionary, okay?!
Guy 1- Oh, right... Wait a minute, am I on TV?!

by uwanttruthitellz May 9, 2009

Mentrance

An entrance for men (a gay man's anus)

Billy got it in his mentrance last night for the first time. I think it's safe to say he's officially gay.

by Tyrone Demery August 24, 2009

Menbrace

also known as a man hug. when two friends hug, no homo

Joe: hey man long time no see
Tim: ya my cat died
Joe: Come here man time for a menbrace

by IHATECATS July 10, 2010

insane in the membrane

Smoking some of that good chronic and it's hitting you hard making you; insane in the membrane.

"Dude, I was just listening to some Cypress Hill puffin on a fat blunt of OG Kush and now I'm totally insane in the membrane. Shit hit me hard man!"

by PsycobetabuckdowN December 4, 2014

Cell Membrane

A: In biology, the Cell Membrane is a thin layer between the surrounding area and the cell's inside. It consists of Phospholipides (Soapy molecules) and Cholesterol (The Anti-advertised body chemical) and a whole lot of proteins. Theoretically, it's liquid. the fact the body doesn't collapse is just because of the hard skin on the outside and the hard bones and some gelitine and solid proteins inside.

B: For internet lolz and retard understanding, see the other description

There are thousands of proteins in and on the Cell Membrane of just a simple muscle cell.

by ChromeLynx May 10, 2010

Manhattan Membrane

The ideological bubble that periodically causes American liberals to believe that they're in Sweden.

Random liberal: Oh my stars! It's Sweden!

Normal American: "Where?"

by Speaking truth to...never mind... February 2, 2005