permeable

Having pores or openings that permits liquids/gases to pass through

Gravel, sand, and soil are permeable.

by Tiger128 May 7, 2009

excessively permeable

a slut, whore, or hoe that allows anything and everything through their membrane.

jessica fucks every man she comes into contact because she's an excessively permeable whore.

by jguerhngiershgseurph February 16, 2023

semi-permeable

adj. something of average quality

-Would you say this kase is pure or impure?
-eh, semi-permeable

-That girl is neither a pig nor a princess, she is semi-permeable!

by ron joremey March 4, 2005

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

Semi Permeable Skinitus

A very rare condition where the skin of a person is semi permeable. The skin therefore allows the transfer of small objects through it and into the body

Around one in every 500 million people have semi permeable skinitus.

by World Health Organisation May 1, 2020