Once I'm In My Head

Think about nothing
Think about nothing
Think about nothing
Think about everything

Once I'm in my head I'm done
Think there might be a way out but then
Once I'm in my head I'm done
Think there might be a way out then
Once I'm in my head I'm done
Think there must be an exit but then
Once I'm in my head I'm done
Think there might be a way out but then

There might be a way out
(A way out? What do you mean?)
Haha, there might be a way out
(A way out? What do you mean?)
Haha, there might be a way out
(A way out? What do you mean?)
The option is gone