Or
TD for short is a name to describe the amount of tards in a given area.
The TD scale ranges
from from 0 to 100 where 0 is an empty building and 100 is so massive that only Chuck Norris could survive.
TD can be used either as an percentage or as arbitrary scale.
"God I traveled with the
Metro today and the
TD was massive like
80"
"I had a lovely vacation, the Tard Density was only around 5"