A Hillbilly Party Popper is a shot shell in which the shot is replaced with confetti, scrap paper, or other ruffage. When these loads are fired paper shoots into the air and makes a popping sound similar to a party popper.
After the 4th of July there was tons of paper all over the lawn from the hillbilly party poppers.
Sometimes when you take a crap at home, you realize one of two things; 1: there is no toilet paper to be found and no one to get it for you or 2: your crap was so disgusting that toilet paper will be no match for it at all. A "Hillbilly Bidet" is when you forsake the use of toilet paper altogether, get up off the toilet and proceed straight to the shower to clean yourself off.
Dude, I got such ridiculous food poisoning that I didn't even attempt to wipe...just went straight to the shower for a hillbilly bidet.