sexeek

n. pl. sex·eek
1. A geek or nerd who is also sexy.
2. A sexy person who is also secretly a geek or nerd.

For use as a compliment for #1 or secretly in reference to #2.

Guy to his roommate: "Dude, she's so hot."
Roommate: "Yeah, I'd ask her out but I have to study for this midterm."
Guy: "Ask her for help. I heard she's a sexeek."
Roommate: "Thanks best roomie ever."