Likely your son just wanted to know if it was an old tune or a new one. A quick internet search located it as a tune from AC/DC:

DOWN PAYMENT BLUES
Written By: Young/Young/Scott

I know that it's evil        
I know that it's got to be        
Know I ain't doing much        
Doing nothing means a lot to me        
Living on a shoestring        
A fifty cent millionaire        
Open to charity        
Rock 'n' roll welfare        
        
Sitting in my Cadillac        
Listening to my radio        
Susy baby get on in        
Tell me where you wanna go        
I'm living in a nightmare        
She's looking like a wet dream        
I got myself a Cadillac        
But I can't afford the gasoline        
        
CHORUS:        
I got holes in my shoes        
And I'm way overdue        
Down payment blues        
        
Get myself a steady job        
Some responsibility        
Can't even feed my cat        
On social security        
Hiding from the rent man        
Oh it makes me wanna cry        
Sheriff knocking on my door        
Ain't it funny how the time flies        
        
Sitting on my sailing boat        
Sipping on my champagne        
Susy baby all at sea        
Say she wanna come again        
Feeling like a paper cup        
Floating down a storm drain        
Got myself a sailing boat        
But I can't afford a drop of rain        
        
REPEAT CHORUS        
        
Down payment blues        
Down payment blues        
Down payment blues        
        
REPEAT CHORUS