What is Postie?
1.
Post work drinks. Usually occuring immediately following the commencement of a mundane office job. pl. posties
Friday night lets meet at the pub accross the street from the office for a couple of posties.
2.
An appallingly bad golfer that loses it completely because their crap game is talked about.
Don't mention the triple bogey to that guy. He is a complete Postie
See