Actually one can have a lot of fun with Latin plurals, or for that matter Greek or Hebrew. On "Inside Shelley Berman," a 1959 album, Berman speaks of "One Kleenex, two Kleenices" and "one sheriff, two sheriffim." In the same vein, Latin scholars will recognize that you rent one video, but two videmus, and that if you buy a second Volvo, you are a two-Volvimus family. Also, omnibus and quorum are already plural. Anyone who knows Greek will agree to "one rhinoceros, two rhinoceroi," and "one hippopotamus [slightly misspelled in English], two hippopotamoi." But you go too far if you buy a second Audi and then claim a two-Audite family!