A best friend you can always relay on, if your actual best friend is not around, or not available for the time being. You often talk to them on facebook or text them a lot.
Anna, and Ray are second best friends, they always relay on each other when their other best friends are not around.
Second bestness is when you know you are not the first choice if somebody asks you to be someone (wife, husband, girlfriend, boyfriend) or to do something (i.e. become the boss). You know that someone else was first choice and altough you accept the offer, it rankles and stays wth you forever, turning you into a bitter, overbearing person.
"I think Mum's feeling of second bestness is why she's always so horrible to me - knows Dad wanted to or should have married someone else."
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.
FRIEND A: "Did you just take a stealthie of me?"
FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"