Before I learned how to speak Spanish, my friend Peter (who cannot speak Spanish) used to translate the name of this beer for me. He said that Dos means TWO (which it does) and that Equis means MULES (which it doesn't). He said that the beer was called this because it is so strong that it kicks like two mules.
For a long time I believed that because after a couple of them I'd wake up the next day feeling like I'd been kicked in the head by two mules.
I haven't had a Dos Equis for a while now but whenever I do I look at that label and I think "it kicks like two mules."