I also get these very annoying Levi's ads when I use the site via the Android stock browser. One is even a full-width video ad that immediately starts playing and you can't see anything of the forum unless it is over. You can't close it easily since it has a hidden close ("x") button that appears only when scrolling the page quickly up or down. These Levi's ads appear at almost every other page request.

It's better on PC using Win10 and IE 11. I don't really mind the side and banner ads because they are not "in your face" ads. The ones on Android are just terrible...