Satchel is used to call ownership over something, used in the UK.
This is the newer version of "dibbs" and "bagsy", it voids both of them. You c
Can not use Satchel to "shotgun" a front seat. You can use shotgun on other items but satchel over rules shotgun on all other items.
sam - I SATCHEL THE FRONT SEAT!
chris - I shot gun it!
Chris gets the seat.
sam - I satchel that girl ;)
Chris - I shot gun her!
sam gets the girl.
maisie - bagsy not closing the door
sam - satchel not closing it
chris - shot gun it.
sam does not have to, it is between maisia and chris to shout satchel first to leave the weakest to close the door.