A derivitive of the word poindexter, a poondexter is a geeky male with no friends, but gets a lot of pussy because he will literally fuck anyone, even Sarah Jessica Parker.
Jared: Dude, I totally fucked my girlfriend this weekend. It was AWESOME!
Able to communicate equally well with both geeks and non-technical people.
John has risen quickly through the company ranks because of his poindextrous ability to communicate equally well with both the developer geeks and pointy-haired bosses. But don't call him a nerd. Erkel is a nerd, John is a proud geek.