What's Going On (Inside My Head) lyrics

I was talking
When I should have been listening
I didn't hear a word that anyone said
It might not have been so very important
'Cause I was concerned about instead
(with)

What's going on
What's going on
What's going on inside my head

Submitted by Guest

What do you think is the meaning of What's Going On (Inside My Head) by Husker Du?