Red Dwarf, Series IV

Lister:
So, if it's not Bellini in there, who is it?

Rimmer:
One of the prisoners. And considering the ship was transporting forty psychotic, half-crazed, mass-murdering, super-strong androids, we thought it prudent to find out who the smeg was in there before we woke them up.

Kryten:
With respect, sir, they're not androids. They're simulants.

Cat:
What's the difference?

Kryten:
Well, the basic difference is that an android would never rip off a human's head and spit down his neck.

Lister:
Can we stop it, Hol?

Holly:
What? Oh. No. One-way process.

Lister:
Can't we X-ray the pod?

Holly:
No. Lead lining. That's to survive in space, innit?

Lister:
There must be some way of finding out.

Holly:
Well, there is. All you 'ave to do is 'ang around 'ere for 24 hours. Then, if you find your limbs scattered across deep space and your neck full of saliva, you can take it as read it probably wasn't Babs.