Yous guys are all wrong. Yous guys is a northeast phrase (often used by jersey girls and long islanders) meaning you guys. The extra 's' is not silent and is added for no reason whatsoever.
Pretty much sums up a bunch of people at once. Mostly used by Italians in Boston'sNorth End/East Boston or on Boston's North Shore (Revere, Lynn) and also Medford and Everett.
"you's are gonna come over afta ta play some cards, right"?
"hey, yous guys are invited ta my house... i'm gonna make sum veal with pesto".