1. "'grab him' cock chloroform"
2. "about horatio neck"
3. "eric delko ryan wolfe lube"
4. "horatio caine costume"
5. "fanfic stetler speedle horatio fuck"
I'm still trying to figure out #2. And I am intrigued by #4.
Edit: So, I did some poking. I think #2 was a search from about.com since all their searches add the word "about" to the search. When I typed #4 into Google I discovered that there is a whole segment of folks out there who are into cosplay with the Horatio Caine character. (To me this is even more amusing than the search term.)