When browsing the web on a public computer incognito mode is a must. It doesn't store cookies on your computer or keep browsing history either, which makes it a must for any avid porn viewer too. Check the photos and you will see how to make it so chome is always incognito so you don't need to change it everytime. Just right click your Chrome icon and edit the target directory like the pic below.
If you just want to run it incognito some of the time you can just click the little wrench in the upper-right hand side of the browser and a drop down menu will appear with the option of "new incognito window (ctrl+shift+n)."