Cruisin' For Burgers lyrics

Frank Zappa (guitar, vocals, percussion)
Ray Collins (vocals)
Jimmy Carl Black (drums)
Roy Estrada (electric bass)
Don Preston (electric piano)
Billy Mundi (drums)
Bunk Gardner (piccolo, flute, clarinet, bass clarinet, soprano saxophone, alto saxophone, tenor saxophone, bassoon)
Ian Underwood (electric organ, piano, harpsichord, celeste, flute, clarinet, alto saxophone, baritone saxophone)
Arthur Tripp (drums, timpani, vibes, marimba, xylophone, wood blocks, bells, small chimes)
Motorhead Sherwood (tenor saxophone, tambourine)
Ruth Komanoff (marimba, vibes)

I must be free
My fake I.D.
Freeeeeees me
Gotta do a few things
To make my life complete
Gotta live my life
Out on the street
The difference between us
Is not very far
Cruising for burgers
In daddy's new car
My phony freedom card
Brings to me

Submitted by Guest

What do you think is the meaning of Cruisin' For Burgers by Frank Zappa?