Note: You could mention about some images, websites, & etc, but don't mention anything that's disturbing, user related, or offensive when in the making of your reply.
Ok so the weirdest thing I found on the internet so far are that of the weird useless websites. & the bizarre but scary conspiracy theories of Scientology.
So yeah, what's the weirdest thing you found on the internet, answer & discuss :)
Also, here's a screenshot I made of what the results are when I typed down "German shepherd in the backrooms" on Google (image section).
Enjoy :)