non-embedded
He called it this, he called it that
But never what it was
We called it shit, we called it grass
And that's the way it was
He took it once, just for the thrill
He'd bought a ticket to ride
We laughed about, the jokes he told
He was one of the boys
Hey, what a guy, he used to be
When he was sober and dry
Smokey nights, Gloomy lights
He was high as a kite
When he turned into a demon
No way to calm him down
Just like a Jekyll and Hyde
He wasn't bulletproof
Shot himself the final round
No man is bulletproof
It's destination underground
Too many journeys, on acid trains
Too many trips, on the astral plane
Danced with Lucy in the sky
On a cloud of ecstasy
Too late to stop him now
Even sacrifice his mother
Turn against his only friend
To reach the ultimate high
He wasn't bulletproof
He shot himself the final round
No man is bulletproof
It's destination underground
Bulletproof
The chief is your medicine-man
No man is bulletproof
He's gonna drug you down
He thought that he could fly
That he could reach the sky
But he went up too high, oh, so high
He kissed the ground, goodbye
He wasn't bulletproof
He shot himself the final round
No man is bulletproof
It's Destination underground
Bulletproof
The chief is your medicine-man
No man is bulletproof
He's gonna drug you down
Since inducing an overdose doesn't really feel like Doug's thing, I chose the more literal interpretation of the chorus and bridge lyrics, that renders even really tough targets as susceptible to physical damage like bullets, a long fall, etc. as a normal, unarmored person. Nonhuman targets are more subject to adjudication; my own take would be to have, say, a tank be put on par with something like a HMMV on the basis that it's a "normal military vehicle" is like rendering a suit of power armor equal to mundane if sturdy clothes like jeans and a leather jacket.
Either might end up a little strong for storytelling purposes, so a better standard might be "Takes something Doug can't hurt with physical attacks and makes it possible to at least do some damage with them." Maybe something to try in a Glorificus encounter before pulling out Steely Dan's Godwhacker, or something along those lines?