For all I know, everyone into anime these days has sex with dakimakura (I didn't know what that was until recently).
The term "waifu" is actually kind of innocent, as it's literally japanese for "wife". It's just streamlined by fans into anime girls or something. I made the topic as a kind of joke but even then I felt wary using the term.
I live in darkness, so I'm not sure what could show up in an image search that would get to me outside of something clearly illegal of a sexual or violent nature (or something like crime scene photography), though all of that is easily avoided.
Yeah...don't fall for searching for the Lemon Party in Google images.