This is what I face every day.

the inurl: searches for websites with that in it
google found 21,270,000,000 websites with www.
google found 18,390,000,000 websites with www.porn

So it searches for sites with actual porn not just the keyword?
Also, I remember the days of just googling porn and fapping to the pictures Id find. The first porn site I ever saw was at scool, we had projects researching presidents and I went to whitehouse.\com and it was a porn site, not anymore but it was. Also, (sorry so many subjects in one comment Ive been doing this shit all night) what sites do you use now? I go to youjizz. whenever I do look at porn anymore.

no, it searches for websites with the word in the url

google found 21,270,000,000 websites with www. in the URL
google found 18,390,000,000 websites with www.porn in the URL
or basically it found ... websites that start with www.porn

Oh, ok. Thanks for being patient with me, Im stoned and just trying to grasp something unknown.

wait i read this COMPLETLY wrong, i didnt see the - in -porn, the -(word) takes out the word from search results so
google found 21,270,000,000 websites with www. in the URL
google found 18.390,000,000 websites with www. in the url with the word porn removed from the search results
so doing the math there are 2,880,000,000 websites with the word porn in google's database