Just, for the record, you can't compare the plurality of beer to the plurality of pizza. English is so messed up that you just can't do it. I saw seven rabbits in the woods behind my house, but only three deers. Should deer have an S to signify plurality like rabbit?
Wouldn't it make more sense to say "yous better start brushing up on your grammar" when talking about plural people reading here, rather than "you better start brushing up on your grammar?"
I'm not an expert in English grammar by any stretch, but I am an expert in argumentation, so don't pull those ammature little tricks