Would you dare to try ?

For ladies :

Nip Twist :
http://www.youtube.com/watch?v=Bx2FackgOUE&NR=1
For gentlemen :
100 Girls - Nipple-Twist :
http://www.youtube.com/watch?v=oW4PpYJnRlw&NR=1
Reference:
100 Girls - Wikipedia, the free encyclopedia :
http://en.wikipedia.org/wiki/100_Girls