I first heard the term Hapa a few years back and realized that technically I could be one based on a loose interpretation of it (hey i’m two one-halves Asian). Here’s the Hapa Project’s official definition:

ha-pa adj.
1. Slang. of mixed racial heritage with partial roots in Asian and/or Pacific Islander ancestry. n. 2. Slang. a person of such ancestry. [der./Hawaiian: hapa haole. (half white)]

The book itself is fun to look at but it’s also stirring up a lot of talk which I guess is good. A recent article in the local paper has a lot about this.