go to walmart.
ANY cosmetic that is under $1 with disgustingly bright, tacky, and typically unwearable colors would be the way to go (i only say this because thats what my friend and i would think whenever we came across them).
HOT PINK lipstick, eyeshadows/eyeliners that looks like a pixie jizzed all over them like a frosty, over-sparkly white, or a blue eyeshadow, WHITE EYELINER-- a must imo, glitter around the eye area (it seems like for reals trailer trash people associate glitter with dressing up-- sorry if im stereotyping anyone but you know it's true) tons of rouge, and clumpy mascara like someone said.
have you decided what you're going to do to your hair?
either something that involves a bottle of hairspray and a teasing comb, something that involves a lot of scrunchies, butterfly clips, or similar hair accessories, or something that involves lots of gel and cornrows for the trailer park girls who are "down".
lol, why am I having so much fun with this?!