Interested in Language
In the following extract, I would like to know what the underlined sentence means. Thank you for your help.
"Michael is the kind of guy you love to hate. He is always in a good mood and always has something positive to say. When someone would ask him how he was doing, he would reply:"If I were any better, I'd be twins!" He was a natural motivator."
He believes that he is so good at what he does, that only by being twins could he do any better.