Quote Originally Posted by Kurulham
Tua mater mus erat, et tuus pater similiter maiobacarum oluit.

I can't believe I still remember that. We were really, REALLY bored in Latin class one day... must have been almost ten years ago now. We actually translated the whole sketch... Though I should note that it's actually saying "your mother was a mouse" as we couldn't find a word for hamster.
Cricetus is the generic name for the European hamster. I'd make a reasonable guess that this is Latin.

When I was looking at the "What do units say?" thread, I did notice that 'tuas matres!' was there as a taunt. Though personally I doubt Legionaries shouted "yo' mommas!"