The upside-down purple cow is back for its longest season ever - 12 entertaining weeks.
In general, purple cows live in fields where it's possible to reinvent what people expect.
Just because it's stupid doesn't mean it's a purple cow!
Sponsors choose their own designs, so purple cows are not beyond the pale.
You don't create a purple cow by being different.
A purple cow isn't a fancy gimmick, or something you slap on to last year's item.
A purple cow is a remarkable story, a story that spreads.
Sometimes, a purple cow is just purple because it's best at serving a nascent market.
He calls a remarkable product or service a purple cow.
Not the kind of purple cow I meant.