When I Google image searched 'butt crack', I got 'About 745,000 results (0.32 seconds) '. No spam ad.
When I Bing image searched 'butt crack', I got '19,500 results'. No spam ad.
When I Ask image searched it said: ' showing 1-30 of 809 for butt crack". 1 spam ad called sponsored results: 'Crack Compare billing resources. Crack, Tips & Trends. http://searchhealthit.techtarget.com '
My search of preference on this topic was the one that offered quality and NOT quantity with it's first image that I call: 'askcrack1.jpg'.