"A Cavalier puppy with a lovely face and less than ideal topline, cowhocks, straight stifles, gay tail, or single testicle will fit your bill perfectly. Gay tails, cowhocks, and so on are important to judges and breeders, but they will make little difference to you. " via Coronation Cavalier King Charles Spaniels
I didn't even know what a gay tail or cowhock was less than 15 minutes ago... I guess I still don't. But as they mention, it makes little difference to me.