It's a Dog Eat Dog World

One of the greatest episodes of Only Fools and Horses is the Series 2 finale, A Touch of Glass. In the beginning, Del has these classics:

Del: This is North Korea's finest porcelain. But our two great cultures have a different attitude towards animals. We are both a nation of dog lovers - the only difference is they love to eat 'em! Come on Rodders, get your finger out, we've got a long drive home.
Rodney: Do they really eat 'em?
Del: Would I lie to you? If a North Korean came to live in London he'd think that Battersea Dog's Home was a take-away! No, there's nothing they like more than a nice plate of poodle kebabs.
Rodney: Oh leave it out will yer!
Del: Or a bull terrier pie.
Grandad: Alright Del Boy, that's enough!
Del: Or sweet 'an sour greyhound.
Rodney: Oi! - one more word out of you and I'm gonna be sick on your sheepskin, and I mean it!
Del: Go on, put yer foot down Rodney. I'm starving! I could just go a nice Jack Russell and chips.

And years ago, I added this brilliance to modern culture:

Ah, genius colliding with genius!

Of course the episode is most famous for it's final scene, generally considered to be one of the greatest in sitcom history.