Don't make yourself a mouse, or the cat will eat you yourself, mouse, cat, eat, make

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Don't make yourself a mouse, or the cat will eat you. 妄自菲薄，遭人奚落。
　　Make somebody something使成为；委派…为；任命…为；make somebody a star使某人成为明星。
　　Mouse老鼠，胆小鬼。Mickey Mouse米老鼠。Mouse还可以解释为我们平时经常用到的鼠标, click the mouse点击鼠标。
　　Or在这里做转折性的连词，解释为否则，通常和else连用。比如：Hurry up, or (else)you’ll be late.赶快，否则你要迟到了。
　　这个谚语从字面上理解的话就是：别拿自己当老鼠，要不猫会吃了你。引申一下：人若自贬，必遭人欺侮，要捍卫自己。