look up anything, like your first name:
1. The Hillbilly
When 2 family members have sex with a step family member.

eg: Father and Son have sex with new Wife/ Step Mother.
Steve: Did you hear about Daz?
Pete: No
Steve: Him and his Dad did the hillbilly!
Pete: They Hillbilly'd his Stepmum?
Steve: Yep!!!!!!
Pete: Well she is hot......
rss and gcal