[Ross has two ways of making plurals 1. to make them end in consonant s, and that works after almost every consonant that he can make it end after, where it will sound and you can here the difference between the s and the consonant, 2.to make them in sibilants iz or es, which will work for churches, glasses, and which ends up producing things like cowses, freezes. The only exceptions are a few well-learned forms like keys, but he doesn't even know cows very well. The last thing that he is learning is that you just need a z after a vowel. He hasn't heard very many of those.]