What does "恍恍惚惚红红火火何厚铧" mean?

哈哈哈哈哈哈哈哈哈哈哈，用输入法输入12个H的时候就会出现恍恍惚惚红红火火何厚铧

ENHahahahahahahahahaha, when you type 12 H's with an input method, '恍恍惚惚红红火火何厚铧' will appear.