1) Clock spider. If you're a fellow arachnophobe, you definitely definitely don't want to Google Search this term.

2) Trypophobia. Another Google Image term that returns a surprisingly upsetting number of visuals. Trypohphobia is also known as repetitive pattern phobia, a fear of objects with clusters of small holes.

3) Any medical symptom. Don't do it. All roads lead directly to cancer.

4) Tetris fanfic. Yes, there is fanfiction devoted to Tetris.

5) Snapewives.  "A group of middle-aged women on the internet who believe they are all married to Severus Snape from the Harry Potter books." There are photos. There are videos. There are blogs. There are ... emotions.

6) Coconut crab. Sounds sort of tasty, right? Sure, in the sense that seeing one will eat your brain alive with horror. (A runner-up: the star-nosed mole.)

7) Mucus plug. Maybe you're pregnant and wondering what to look for. Maybe you should just use your imagination on this one.

8) Bedbugs on mattress. SWEET MINERVA NO.

9) Skin condition. Nope, you don't have to be more specific than that -- Google will return a plethora of terrible visuals for you to choose from.

10) Mopene Worms. From Zimbabwe...a delicacy. Eaten dry like potato chips, or cooked and drenched in sauce.

11) Yourself. Either you'll find no proof whatsoever of your existence or you'll realize just how screwed-up your Internet legacy will be. There's no happy outcome here.