It might be a bit controversial
, and in some parts of the country
might even get you fined for contempt
, but if you're male
you could do it the way the Roman
s did it, before anybody
With your left hand, hold your testicles and swear on them.
Seriously, that's why it's called testimony.
I am told (not overly politely) that according to about.com's Latin etymology section, this is a legend. Duly noted, but pending further investigation I will take the word of my Latin teachers.