Vaccination Scar

So the chemistry's set
And I'm not the saddest cheerleader
To forget the American word
For the gang in the head
That dwindles 'til no membersWhen the mystery's met
The sky looks threatened
Heading home in the dust
Singing, 'Life is forgetting'
Good enough for the frivolousThere's one thing I remember
Is this tear on your bare shoulder
This little silver boulder
This slowly falling starWe're rolling, so what?
Never getting older where
The moon-shocked curtains part
The start of enough
A tear dropped in a vaccination scarI'll tell ya if I'm able
That is, I'll tell ya like it is
He went down like a bad card table
Like the Tacoma Narrows Bridge
Like the Tacoma Narrows BridgeSwimming on a bit
Stop, you're treading water
As the sun assimilated the words
For lighthouse fire
Burning down to ember's endThe mystery met
Sky just reddened
Heading home under dusk
Is 'Life just forgetting'
Another word for frivolous?Little silver boulder
Silence from Mars
For the heart of enough
Or a teardrop in a vaccination scarWherever you are, scar