Cultivating my secret hobby

Warning:
I would like to work on cultivating my secret hobby: I like to follow people I know around town.

If you spot me following you, just ignore me and let me do my thing.

I may follow you to the grocery store, watch you do your grocery shopping.

I may follow you to the bookstore, and interview the cashier about your purchase.

I may follow you to the movie theater, sit a couple of rows behind you and observe what parts of the movie you laugh at.

I promise not to follow you into the restroom or a dressing room, however.