I have a colleague who often puts his hands in his trousers and has them there for varying amounts of time.
I work in a very open plan office, with a cubicle layout, but the dividers are low. We all sit in squares, each facing in, so I can see two people to my left and right, and one in-front.
As a result of the layout, it's very easy to see out of the corner of my eye, my colleague "rearranging" himself.
At first when it was once or twice it was a bit weird but when it's happening a few times a day, it's getting a bit disgusting.
How best would I approach this?