Top Definition
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......
by vox plasmator August 16, 2010
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.