Like telling somebody it's funny to stick your finger up a cow's anus just to see if they'll do it, ninjorgies on the internet are far more easier to partake in. The person doesn't have to buy wellies; doesn't have to trespass on a farm; doesn't have to get a smelly finger; all that is required is they forfeit their dignity.
The power of ninjorgies was so much so that people started to believe mentioning a ninja alone counted as comedy.
"I'm a ninja!"
"You're a fucking douche who can't think of anything original to say to other douches on the internet."