A female pubic hair style that consists of a large frontal bush with a connecting thin bush that trails over her taint and up her gluteal cleft; thus, resembling the hat fashioned from the skin and fur of a raccoon. The "coonskin cap" was a popular style among women in the mid to late nineteenth century and 1970s, and is commonly seen in retro pornography.
Your mom's coonskin cap makes her vagina look like Davy Crockett.
The act of placing one's testicles on someone's forehead, stretching one's taint over the top of someone's head, and hanging one's penis off the back of the recipients head, thus resembling a coon-skin cap worn by Davy Crockett.
"Hey, lets give my brother-in-law a coon-skin cap when he falls asleep! Then we can post pictures of it on facebook!"