"I'm getting to that age now where this body doesn't just shake everything off and I really loved, loved, loved scotch, but it's just like applying poison to your body... It's delicious, wonderful poison... but I had to really say I like singing and writing more than I like scotch, so I had to really dial it down and now I'm a little more boring." Rocker John Mayer, 35, has had to give up his favourite drink to protect his recovering vocals following throat surgery.