Oh, that was easy, says man, and for an encore he goes on to prove that black is white, and gets killed on the next zebra crossing.
9 seconds sound clip from The Hitchhiker's Guide to the Galaxy (1981) - Episode 1 sitcom.
You can hear this line at 00:29:30.813 in the Blu-ray version of the TV Series.
Quote context
[...]
- The argument runs something like this.
- I refuse to prove that I exist, says God, for proof denies faith, and without faith I am nothing.
- Oh dear, says God, I hadn't thought of that, and promptly vanishes in a puff of logic.
- Most leading theologians claim that this argument is a load of dingo's kidneys.
- Hey, Ford. This towel's moved.
- Yes. That's a six-light-year jump.
- Good. That means we' re near Bernard's Star. We can jump a ship there.
- Can we?
[...]