Ha ha...Daddy-O..Yeah, that one, along with beatniks seems to have fallen out of vogue! Nowadays if someone is blowing a mean axe we say something like: "Yeah, that cat sure is a bad cat!' 'He's smokin!'...If he/she has a good energy about them it's like: 'Yeah, that cat has a really good vibe about him' or 'He's a really hip cat'