Categories: when does it become crossing the line?

This is an image I found on tumblr. Thought it'd be interesting to bring up in class in light of the discussion we had about trolls on the internet. It reminded me about the idea of crossing the line. Thoughts? Below is the link to the post and the blog it came from...

http://30.media.tumblr.com/tumblr_m2kynsx8Wt1r7ge32o1_500.jpg

http://northwesternsexweek.com/post/21214281494/as-promised-a-yes-no-maybe-sheet-has-been