Academic Men Explain Things to Me

I met with my advisor last week in his office on campus, we usually met via Skype.  He had his laptop on the chair next to me and where I could see the screen.  After a while the laptop screen went into slide show mode.  I didn’t think much of this until I saw a couple very inappropriate pictures of what I am guessing is my advisor’s girlfriend.  From what I have heard she is younger than me and there is at least 30 year gap between them.  I saw at least two naked pictures of a woman’s front side and another of her backside.  I should have said something but I didn’t.  I am dreading out next meeting.