I fear that is more than NSFW.
It's NSFUK -- I fear that is genuinely illegal in the UK and may get anyone clicking on it (as I have just done) into trouble. I may be wrong, and I hope so, but after the "tiger video" debacle a few years ago I really worry.
So, don't make the mistake I did and go to the image tr1ck5t3r posted from a country like the UK or US.