1) very hard to explain. it is the last name of a Japanese character from the anime hit series: Fooly Cooly. but this character was a very sexy, energetic person. so when people say that name it refers to sexuality, and awsomeness.
2) Haru Hara *noun* word used for anything that is great.
3) refers to the verb fooly cooly. sexual activity is haru hara
"i just fucked a pornstar!"
that is so haru hara.