"Is there some way I can tell?" he asked her.
"Of course...you just have to know where to look."
"They are beautiful, but I don't want to find out too late."
"Too late?" she asked, knowing exactly what he meant.
"Are you going to make me guess?"
"Ooh, you are the impatient one," as she pointed at her throat.
Bewildered as he stared at the supposed answer, his face visibly brightened.
"Yep, that's right," she said "off you go little brother, choose well."