I definitely have done this, but I was in a DBT group once and another woman and I were talking about cutting. A third woman made some really judgy comments about it. So of course I was irritable and did not handle the situation well. I retorted back to her that "it makes as much sense, but is less disgusting, than vomiting, isn't it?" Since she was bulimic. Not my finest moment, but we were able to talk about it in a healthy way with intervention from the doc. I am positive we both learned how it felt to be on the judgement end of judgmental comments during that session and why it is not acceptable.