noun. Sexual attractiveness (or boinkworthy-ness).
Real citation: "I go to The Comedy Store to work on my stand-up, not to have my boinkability assessed. One’s sexual attractiveness is probably the most sensitive part of any man’s or woman’s self esteem. Why somebody, unprovoked, would attack such a tender area, I can’t imagine."
(Louise Palanker, "Louise Palanker's Adventures In Comedy," http://www.louisepalanker.com/adventures-in-comedy/)
Made-up citation: "Most people have a higher or lower boinkability level than they think they do. I also think everyone is a little wrong about their height."