Ask DNA by Yoko Kanno's The Seatbelts featuring Raj Ramayya. This is the music video that's the also the opening for Cowboy Bebop: Knockin' on Heaven's Door, or Cowboy Bebop: The Movie outside of Japan.
Lyrics by Tim Jensen:
Gummed up, brain dead and can't decide
you can't pray enough, you can't hide
You can be cool or you can cry
Do it wrong
Not it all
Or do it right
No one owes you, no one's to blame
Save for bad genes or DNA
Ask your conscience the why and how
Do it then
Do it when
But, do it now
What's up sweet cakes?
Who's hip anyway?
Earth girls are easy
So what you gonna do, little buckaroo?
(Hey you, you better ask her nice!)
All you gotta do, happy fool, is ask your mom