Outside our general ire for lefties, here's why Wyoming hates California, Oregon and Washington. We have a metric fuck ton of high quality, very low sulphur coal, and we want to sell it to Asia where there is massive demand, especially for our coal. To do that, we need a western port to make it economically viable. Well, the greenie left coast has basically colluded to ensure all deep water ports are off limits for our (as well as Montana's and Utah's) coal to be transited through. If we got a port, that would be around 25k new jobs for our state, and high paying jobs at that for the working men and women of our state and our country, as well as billions a year in net revenue. The coal states have been trying for over a decade to get a port, and the left coast has blocked the effort all the way with lawsuits and political bullshit. Ports have been certified they will not cause water contamination, but they still get blocked by carbon based environmental regulations that they alone have, even when the products aren't going to be burned within thousands of miles of their land.
Imagine if we said no Oregon and Washington forestry products could be transited through our state because we're jealous they have trees and we don't, or more relatively that they're cutting down CO2 munchers. How about prohibiting California produce because we believe it's a gross misuse of water they don't really have rights to? What would be the response be to that? Exactly, it would be fought with the fervor it deserves.
So when someone from Wyoming tells a left coaster to fuck off, we mean it. It's not supposed to be personal towards them, but they made it personal to us.