Describes what is commonly referred to in America as "third base" this word is code that is often indeciferable to outsiders.The initials of Billie Joe (BJ) from Green Day are changed to HJ making the name "Hillie Joe",the initials giving an easy route around having to say disgusting words.Female Hillie Joe is the equal and opposite to Hillie Joe.
"Omg did you hear about Emily last night?"

"Nooo...what?"

"Her and Potato were gone a long while...Hillie Joe/Female Hillie Joe is my suspicion"
by Weirdo Smurf February 15, 2009
Get the Hillie Joe/Female Hillie Joe mug.