Right vs Wrong

The other day me and Dale had an argument and I was right and he was wrong. Well he kept saying that he was right and I was wrong, so I asked momma, but... she didn't know, so we just kept arguing. While we were arguing, momma found my science book. Dale asked, "why did you get her science book?" Momma said,"to prove to you that she is right, you are wrong and I can have some peace and quiet." See we were arguing about dinosaurs, well technically a specific dinosaur the Tyrannosaurus Rex, and which period they became extinct in. I said the Cretaceous and he said the Jurassic,so I said there's no way that is possible, but he just kept insisting that he was right and I was wrong. Well, to make a long story short I won but he just couldn't except the fact that he lost so I said," hey, you got to lose an argument sometime." Right?