From the Mouths of Babes...
Conversation I had the other day with young child about her dog.
vix: So what sort of dog is he?
girl: He's a Border Collie plus
vix: A Border Collie what?
girl: A Border Collie plus Staffy!
I almost corrected her to say he's a Border Collie x, not a Border Collie +, but then I had a think about it and decided she was the one who was right.
Vix