<p>If the subject matter of a statistical analysis is unsavoury, or otherwise emotive, best to not go into more detail than you need to. I agree with @StephanKolassa here—your statistical question in this case is generic enough that you lose nothing from not mentioning that it has to do with pornography.</p>
<p>When you do need to go into some detail—and @Tim is surely right that no topic should be taboo—be serious, &amp; use neutral, formal vocabulary. (It's a small point, but &quot;pornography&quot; sets the tone better than the slangy &quot;porn&quot;.) If the topic also invites controversy, resist any temptation to editorialize.</p>
<p>In any case, the expectation is that you'll be attentive to other users' concerns, &amp; willing to work together towards a mutually satisfactory resolution.</p>
