To big up your career (or just tell lies) to such an extent its obvious that you are a bluffing
bellend.
Mainly used in the
British Armed Forces, it's first recorded use was to describe an infamous and unnamed ex-
Major who took to residing in the "Land of Cuisine & Scenery," (it is also famous for other less salubrious practices with minors.)
- Have you heard John in accounts
talking about his
time on a secret mission with the
SAS in North Korea ?
- He's spouting bullshit of Gamlinian proportions