A Green Glass Door

[Nazzhoul]

There is a green glass door. Some things can go through it, but some things can't.
For example: A mattress can go through it, but a bed can't. Grass can go through it, but a lawn can't.
You may ask yes or no questions as to what can go through the door. Good luck!

[Damus_Graves]

Balloon

[Gzz]

a transistor

[Damus_Graves]

Spoiler : The Answer :

Double back to back letters

[Jim]

LOLOLOLOLOL, I know this its like Bobby's world or whatever its called my friends do this a lot. (not a real puzzle)
Also a foot can go through this door but not a shoe.

[Gzz]

The things who are part of an object

[creedkingsx]

My foot can, but my hand can't.

[Ash]

a nigger and a yellow person can go through it, but not a white boy

[Nazzhoul]

Damus has the right answer.
Mintberry, Creed, and Ash are all correct.

[Caramel]

sounds like affirmative action

[Ash]

A troll can enter the door, but not a moderator.

[Glip]

A troll can enter the door, but not a moderator.

Creedkingsx can go through the door, but not Bruno, Archangel, or Ash >.>

[Damus_Graves]

dammus can go thru the door

[Ash]

Creedkingsx can go through the door, but not Bruno, Archangel, or Ash >.>

my balls can fit inside

[Caramel]

Creedkingsx can go through the door, but not Bruno, Archangel, or Ash >.>

i can fling poop through the door and hit you in the head with it.

[creedkingsx]

i can fling poop through the door and hit you in the head with it.

To bad his head can't go through the door to receive your flung shit.

[Caramel]

To bad his head can't go through the door to receive your flung shit.

Then I'll aim for his teeth. BTW, if I fling a piece of poop through the door, but it transforms into shit mid-flight, will it still go through the door?

[Jim]

So can a pool go through but not chlorine, because that would be un-sanitary.

[Dust]

All the letters keep creeping me. I'll choose to be a bookkeeper to outcreep the letters.