Act of beauty

I am still trying to wrap my head around it. What is a senseless act of beauty?

Here is what I imagine. I am walking down the street and I see an old lady having trouble crossing the street. I run to her, offer to help, hold her arm, and cross the street while signaling crazy drivers to slow down. That is my random act of kindness.

She thanks me and walks away. I shout "Wait!". She turns around and I pose like this:

There! That's my senseless act of beauty.