I am here, but not really
My presence is eerie.Why the long face, why the frustration
After all I am only a sensationYou and my body went separate ways
I fill out the empty space
What am I?
I am here, but not really
My presence is eerie.Why the long face, why the frustration
After all I am only a sensationYou and my body went separate ways
I fill out the empty space
What am I?
A bit dark... but is it
Phantom Limb Pain
I am here, but not really My presence is eerie.
The feeling of the limb is there but not the limb itself. 'Eerie' as a play on the word 'phantom'.
Why the long face, why the frustration After all I am only a sensation
The associated discomfort is only a sensation. 'Frustration' comes in because there's no way to actually treat it.
You and my body went separate ways I fill out the empty space
'My body' = the missing limb itself. The phantom limb pain fills the space that the limb occupied.
Are you
A fart?
I am here, but not really
It physically exists but you can't see or touch it.
My presence is eerie
It disturbs and startles people.
Why the long face, why the frustration After all I am only a sensation
It will not cause you physical harm, but the smell will make you frustrated until it fades.
You and I went separate ways
It left your body.
I fill out the empty space
Gas expands to fill the room.
I think it might be a
deja vu
It's a bit difficult to explain, but it is a sensation, often eerie. You feel like it's currently happening, but it's not. And the "you and I went separate ways" might mean that:
you and the "you" from the deja vu are not the same... if you know what I mean.
What about
Smell
Because
Eerie presence, especially if unexplained. Not really here because it can dissipate. It is only a sensation, I assume frustration refers to the frustration of the riddle. After you go somewhere your smell fills the path behind you. Note that this explanation also works for the answer noise assuming you make some noise while walking but smell is what I picked since the word for smell is both the sense of smell and a smell itself (possibly only in slang)
Are you:
A Cold Breeze?
I am here, but not really My presence is eerie.
You can just feel the breeze but its not really present. Its just air passing slowly. A cold breeze is often eerie.
Why the long face, why the frustration After all I am only a sensation
No need to get frustrated. Its only a sensation of breeze brushing your skin.
You and my body went separate ways I fill out the empty space
Breeze passes you and the air fills empty spaces.
Is it
the Past?
The past exists, but not anymore (philosophically speaking), which makes it scary/eerie for some.
Not entirely sure about the third/fourth lines, but I think it has to do with memories, particularly bad ones that cause grief.
You and your past go separate ways - while you go forward in time, the past is always backwards. Also, the past is always in the space between what once was the past and where you are in the present.
Are you
Darkness
I am here, but not really
Darkness doesn't really exist, it's more a lack of light
My presence is eerie
Many people are scared of the dark due to the unknowing of what it hides
Why the long face, why the frustration After all I am only a sensation
Possibly the hinting at the fear of the unknown, hidden by darkness
You and I went separate ways
Your shadow, which is made of darkness is going away from you
I fill out the empty space
Everything that does not have light is filled with darkness
Are you
a bad dream
I am here, but not really My presence is eerie.
Correct for a bad dream.
Why the long face, why the frustration After all I am only a sensation
Bad dreams can make you frustrated, and dream a kind of sensation(not sure)?
You and I went separate ways I fill out the empty space
When you wake up dream is gone, but stays in memory(empty spaces of our memory).
Are you
Loneliness?
I am here, but not really
It's the feeling when no one is around
My presence is eerie.
Loneliness is a uncomfortable feeling
Why the long face, why the frustration After all I am only a sensation
The sensation of loneliness can make you sad or frustrated
You and my body went separate ways I fill out the empty space
When we leave each other, then I'd be alone (not sure what loneliness's "body" is though)