It can be from any fallout series game. It can be from a trailer as well.
Mine is: "atom bomb baby" followed by "big iron".
LYRICS/TRANSCRIPTION:
Atom Bomb Baby: The Five Stars [1957]
Got a doll, baby, I love her so
Nothing else like her anywhere you go
Man, she's anything but calm
A regular pint sized atom bomb
Refrain: Atom bomb baby, little atom bomb
I want her in my wigwam
She's just the way I want her to be
A million times hotter than TNT
Atom bomb baby loaded with power
Radioactive as a TV tower
A nuclear fission in her soul
Loves with electronic control
Refrain
Atom bomb baby, boy she can start
One of those chain reactions in my heart
A big explosion, big and loud
Mushrooms me right up on a cloud
Refrain
Atom bomb baby sweet as a plum
Carries more wallop than uranium
When she kisses, there's no hitch
Zero power, she turns on the switch
Refrain
Atom bomb baby, little atom bomb
I want her in my wigwam
She's just the way I want her to be
A million times hotter than TNT
Atom bomb baby, little atom bomb!
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All of them. I listen to the fallout 3 and Fallout Vegas from Songza.com. Plays them all, no adds. It's awesome. I listen to it at work.