The whole point of this conversation is BG wants to show the world that he's got a female friend.
He is leading you to a probable question of
"A friend does it for you?? A guy ??? WTF dude??",
only so that he can say
"No silly !! its a she !! I have a female friend who does the eyebrow plucking for me"
So, how do you look like after the trimming/plucking/threading/shaping your eyebrow ??
Like this ??
