The act in which two red-headed lesbians scissors, causing their red pubic hair to rub together vigorously.
Yesterday I walked in on my mom and Wendy starting a forest fire. I think I lost interest in all women.

Dang Jim, don't get caught in that forest fire over there.
by Eugene Horney September 10, 2010
a forest fire happens when someone with excessively long pubic hairs fucks for too long and too hard, way past the point of bush burn. Forest fires occur when the pubic hairs become so heated by friction that they combust, resulting in a very un pleasent dilema.
"hey, i heard you give it to a woman hard, you wanna head up to my room"

"yeah well let me shave my shit first...don't want another forest fire happenin'.
by The-Mathias July 11, 2008
While masterbating without lotion, the heat from the friction causes the pubic hair to ignite.
Phil doesn't have to shave now because of the forest fire last night.
by PSpin420 November 2, 2009
When a bunch of gingers are together in one place
Look at that forest fire!!!!! owait its just reber
by ilovetofuckgingers November 9, 2007
Noun. The term for outdoor sex with a redheaded person.
"I enjoyed a forest fire with my ginger boyfriend the other night."
by Yoyomaaa June 24, 2014