The "HANDFLICK"

It is a means of communication- non verbal but can mean anything.
maybe "same day same sh--!" or nothing new or maybe introversion?
It's used like a masonic sign that the "Fraternity/Sorority" had to know and understand as it was being "Flicked".
Now its a "Grunt" and asked what that meant, a longer grunt becomes more audible.
She understands. It is Fate!