'Lardered'
To get told to smarten up your uniform by a
male teacher. This involves tucking your
shirt in and pulling your tie up.
Occasionally this will also involve removing non-school uniform and putting on your
blazer.
boy1: what have we got
next?
boy2: not sure
teacher:
Oi! Get your shirts tucked in and smarten up!
boy1: ughhh...
(a few moments later)
teacher: right
now if your teacher asks where you've been, tell them you got lardered
boy2: hahaha you got lardered
boy1: shut up