Rugby is an immensely popular sport in Great Britain - it's basically a much worse version than American Football. It brings all the cons and problems of football, with none of the cool outfits, body armor, cheerleaders and fun that comes along with it. Another pitfall of British-style rugby is that many times scenes like in the above picture can happen - where one man throws his junk into another man's face.
Getting another man's junk thrown in your face like this is never a good thing. The guy probably got traumatized for life after this and had to see a psychologist... just kidding, this is a completely normal thing to happen in British rugby, which is why so few people actually like it. In comparison, everyone loves to watch NFL games - even people that are not from the US.