IOW, a search that returns only what “Safe Search” would filter out? For example if I’m searching for “tits”, I do not want page after page returned about the birds in the family Paridae. Gimme my porn dammit! 
I’ve seen third-party sites that do this (by doing two Google searches, and subtracting the one from the other), but none of them seem to work any more, presumably due to not keeping up with changes in Google.
I’m sure if you turn off safe search you’ll do pretty well for yourself. Hell, I sometimes play a game where we randomly put in a female’s name and see how long until we get to pr0n.
It never takes long.
Unfortunately, it’s not always “pr0n” of that person, despite choosing a famous female.
The one I’ve seen before is http://www.monzy.org/unsafesearch/images/
(Should be ok with the 2 click rule, the home page doesn’t display anything nsfw)
Huh, that’s the one I was thinking of, too. It didn’t work yesterday when I tried it. I guess I should have posted the link anyway.
I must be missing something ~ tits -paridae ~ does not have any ornithology birds on page one
I just picked that as a hypothetical example; and in fact a Googol Image Search for tits with Safe Search off is not particularly ornithological. 
You don’t get many birds with Moderate, either. And with strict Safe Search, it filters the word out entirely, and doesn’t give you anything.
I sometimes play a game where I put in any word in the dictionary and see how long it takes to get to the dirty. ‘Spoon,’ ‘garden,’ ‘happy’… literally anything will get you there if you go past two pages.