batters on deck
A girl who is so beautiful, smart, funny, and has such a good personality that she is not only taken but has guys pursuing her in the hopes that her boyfriend slips up. It's a once in a lifetime opportunity if you get to be with a girl like this, but it seems there is always someone ahead of you in the "batting order."
Guy 1 : "Wow, that girl is just amazing in every sense of the word! Do you know if she has a boyfriend?"
Guy 2: "Haha you've got to be kidding me, don't even waste your time, she's got batters on deck."
Guy 2: "Haha you've got to be kidding me, don't even waste your time, she's got batters on deck."