\ haw-RIP-uh-leyt \ , verb;
1.To produce a bristling of the hair on the skin from cold, fear, etc.; goose flesh.
What can cause one to horripilate?
The thought of stepping on a nail and it going through your shoe.
Watching Ghost Hunters in the dark.
Knowing you can win the card game at your next turn, but the person in front of you goes out, and wins the last brownie in the box.
The preview for the movie Craigslist Killer.