>>28485532 (OP)First reply is pretty spot on.
its meaning evolved over the years depending on who you ask.
as far as i know it was a hick thing, you'd accidentally run over a raccoon, you'd skin it and put its tail on your car.
foxes were harder to run over, ergo its a cooler trophy.
became a vanity item after that, took on racial connotations in some circles, likely appeals to the kids who grew up reading about davy crockett etc.