To reserve a seat (usually for your friend who will be arriving shortly) by placing your
bag or jacket on it.
Verb: to bags
past tense: bagsed
Predominantly used by school
children, especially on school bus, to stake a claim on the seat beside them for the friend who will board at the
next stop.
Seated at the crowded coffee house, I placed my carrier bag on the
chair opposite me.
Presently, a polite young man came up placed his hand on the vacant
chair and said, "Excuse me, are you using this
chair?"
To which I responded, "Sorry, mate, I'
ve bagsed it for my girlfriend."
"No worries!" he replied.
Or at a dormitory... "I bags the
bottom bunk by the door!" In which case you immediately place your bag on your bunk to secure ownership.
Can be used to lay claim for anything on offer, if there is a queue, or lack of provisions or something of limited supply, where there is rivalry. (whereby you, or your absent friend may miss out, if you fail to bags it for them).