The act of requesting an individual around you to give you an opinion, idea, item(tangible or otherwise) , etc. Chuck us does not necessarily mean actually chuck the said item/s.
A saying used mainly by youth from Tasmania, Australia. Used when someone has something favorable and you want some. The 'us' part never changes, even if it's only you wanting the thing.
Freind buys Tim tams
Other friend: Hey Felix, surely chuck us one! Surely! Surely chuck us one!
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?"