When a horny individual goes on a sexual binge with multiple people in a short period of time, destroying everything in his or her path... like a sex tornado.
Ben: "Charlie, where's mom been this weekend?"
Charlie: "Oh, she's been on a hornado in the next town over."
Ben: "God bless them."
When your pussy is so desperate for sex that it (somehow) sucks every dick in a defined mile radius, depending on the size of the pussy/(w)hornado. Usually, this attracts to Texans, people from Oklahoma, and anyone in tornado alley.
Jackson: Where the hell is my cock going?
Nancy: Sorry, I can't control my (W)HORNADO!!