it could mean
two things.
1# i already have my ears stretched up a qauge
once your a size you want
(im a 12mm) you leave a tunnel,plug or wood in it.
the smell is not particulary nice but bare with it.
the second thing it could mean
is a way to threaten
people in a horrible way.
which i usually do. :D
and is often used here in london
alot