I was busy at filing tasks today, working the hole punch and manufacturing... er... more than one *chad*. I consulted the *Computer Contradictionary* by Stan Kelly-Bootle, which is normally a reliable source for this sort of thing, and it claims that the plural of *chad* is *chadim*.

It referred me to the [*New Hacker's Dictionary*](http://www.eps.mcgill.ca/jargon/jargon.html) and the [*Jargon File*](http://www.catb.org/jargon/html/C/chad.html) which are sadly silent on the plural.

Does anyone know if *chadim* is a recognised plural (even among the *l33t haXor* community) or is this another of Kelly-Bootle's jokes?