He is a 'madman' out on the ski slopes. [=he is an extremely daring or reckless skier]
He drives 'like a madman'. [=he drives very recklessly]
a celebrity being stalked by a 'madman'
(..) ...if you will but kneel at mine. You are generous... ...as you are divine... ...O king of kings. Such an offer only a madman would refuse. But the.... The idea of kneeling, it's.... You see, slaughtering all those men of yours has.... Well, it's left a nasty cramp in my leg... (..)2006 300
(..) ...have their reputation to consider. Choose your next words carefully, Leonidas. They may be your last as king. "Earth and water." Madman. You're a madman. Earth and water. You'll find plenty of both down there. No man, Persian or Greek, no man threatens a messenger. You bring the crowns and heads (..)2006 300