Plurals shouldn't be illegalized because they're words all the same.
The original Idea of the game was use a word in which the next poster cannot continue the chain, thus needing a new word.
So plurals have no reason to be illegalized. they're still legitimate words and not spamming, like onion and such.
Now then.
Alexina.
"i once killed an antelope, you should come over for dinner"