I've never actually held kryptonite in my hands, so it is not possible for me to give a complete overview of vulnerabilities. 

'flat foot' and 'water in my shoes, during winter'.

When I lived in Qingdao it was definitely Karen Wang.....

Long legs in a short skirt

  Scan beat me to it with the kryptonite thing, so i'm gonna have to go with the truth and say 'fatherhood'. I never used to give a damn about my health or drinking, smoking and taking drugs. Now I have to be all 'responsible' and that. Pfff, what a jip.

My scrotum.

Bullets. My only weakness.

Short skirts and lonnnnnng jackets.

My modesty. I'm the most modest person in the whole universe and beyond.