Everything is bigger in Texas

Alright, listen up, nimrod. This joke is about Texas, which, as everyone knows, loves to brag about being the biggest and best at everything. The joke points out that they not only have big guns but also big winter storms, which is kinda ironic since Texas isn't exactly known for its blizzards. It's funny 'cause it exaggerates the whole "everything's bigger in Texas" stereotype, even when it comes to stuff they probably don't want to be big, like natural disasters. You probably still don't understand this, you're probably from California or something.