She probably didn't want to err.. adjust... in front of you.  I dunno....
phyzix.... In non-crude terms, a camel toe is sort of a wedige for a girl.  In the front.  Get it?   (edit-And what the Evil Milkman said 

)
There was a skit on Conan O'Brien staring Camel Toe Annie.  I still haven't recovered from seeing that.