1.) I'll be see you half past five.
2.) I'll be available anytime around half past five.
3.) We'll light up half past five.
4.) Cant talk right now, at work, hit me back around half past five.
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.