git-svn-id: https://jules.scsys.co.uk/repository/shadowcat-code/scratchpad/matthewt/sig/lib@1441
8a6f57db-631f-0410-b083-dc7c4259d016
< edenc> then the guy says "oh, 20 cm isn't a big deal"
< edenc> and my wife said, right, I'll shove a 2cm dildo up your ass then
a 20cm dildo and we'll see if it doesn't make a difference
+%
+< tm604> invariant, noun: variable that the sub will modify on the sly.
+ see also: outvariant (a variable that will change value at some
+ unspecified and inconvenient point in the future)