Falling towel

Falling towel is one of the classics of the exposure, and maybe lead to small penis humiliation. There are at least two ways to your towel falls, exposing your naked body, and maybe, your "small" secret:

1) By action of natural elements, like wind, that makes your towel fly away, leaving you naked.

2) By other person, someone just pulled down your towel to expose you.

So, the question is, how are you expose naked to the world?