[GRISSOM:]
When you get out
Into the field
At a crime scene
Remember this

Because witnesses lie, we can never deny
The evidence
Listen to them, you must, they are all you can trust
The evidence
[CATHERINE:]
So clues in
Fingerprints, shoe marks,
Dead bodies in parts
We will gather
[WARRICK:]
Slugs of .44, .22
Gunshot residue
Bullets scattered
(Or shotgun sabot.)

[SARA:]
When you light up the sheets, two suspects much in heat
Leave evidence
Thank goodness for UVs, cause stains are hard to see
They're evidence
(Ick! I hate doing beds.)
[NICK:]
Best part is
If the case is old,
Trail is getting cold
We can still find
A wealth of
Traces well-preserved
Chemicals unearth
S'crets left behind
(Unless there's rain. Damn, I hate rain!)

[DR. ROBBINS:]
After that, when you're done collecting every one
Bit o' vidence
Send the body to me for a sweet autopsy
For evidence
[GREG:]
And you can
Send stuff to the lab
Leave them with the fab
Lab technician
(That's me *ahem*)
Bio-bits
Bullets, traces, stains
Someone's lunch remains
I'll process 'em.
(Give me Gran Turismo and you'll be on top of my list!)

[BRASS:]
Get a warrant before you accuse a man for
Being guilty
From the info you gain from blood, spit, semen stains
That he's filthy
(Grissom: No, he's guilty.)
(Brass: Guilty, filthy, same thing.)
[CATHERINE:]
And that's why
We work overtime through the grease and grime
For the data
(Damn, I need coffee!)
[WARRICK:]
Though hours are
long, we're underpaid, the perp put away
Is the matta'
([To glares of teammates] What! It rhymes.)

(Grissom: (Nonchalantly) Okay. Altogether now.)

[CSI TEAM:]
Yes, we are CSIs, and we use our sharp eyes
For evidence
We use our swiddle sticks to swish spittle and spit
For evidence
[SARA:]
DNA
Lab results' our friends,
Working out the end
Of the drama
[WARRICK:]
But beware
LV CSI
Meets the FBI
[GREG:]
Bloody Drama!
(Dr. Robbins: Subdermal hematoma!)
(Brass: Feds are Mafia!)
(Catherine: Mamma mia...)
(Nick: Si, belladonna.)
(Grissom: All right, enough. Back to work.)