Slang term meaning that one is just willing to have sex. It's like having a friend with benefits. Just make sure the participating members are clean and use as much birth control as possible.
Penny was a girl who was always "down to fuck". We had so much fun together. I hope her birth control lasts!
Opposed to fucking somebody up, this will almost always end the beings life. To fuck somebody or somthing down, while walking behind the person or object you must vigorously leap into the air over your enemy, at this time you will be hovering over them. Once you are succesfully hovering over the human you must pelvic thrust their cranium into the cavities of their chest.
Dude, i just fucked that guy down. I think hes dead. I love to fuck down!
After life fucked somebody up, to help them get better mentally by having sex with them. Typically also implies the person is a bottom, meaning one literally goes down on them while fucking.
Man I'm so fucked up, hopefully this new girl I'm dating will finally fuck me back down...
To fuck someone back down should be a cultural norm in today's society where so many people are lonely and depressed