totes hot... a physical attraction to someone of desired sex. If someone is fuckable then this person is likely to get fucked... if a person is nearly fuckable then it depends on the amount of alcohol intake of the sayer about the fucking situation.
The judgemental determinability of how "fuckable" someone is, at the discretion of each person. An attractive looking person could have a low fuckable factor(for example, if they had a flat ass). Likewise, a somewhat unappealing looking person could have a high fuckable factor (if, for instance, you didn't have to look at their face).
"While a person may think Rosie O'Donnel is ugly, they might determine that she has a high fuckable factor because she has a big ass."
"Ellen Page may be a bit flat-chested, but she's got a fairly high fuckable factor in other regards."