ridiculously overrate oneself like an ant trying to topple a giant tree
Related Translations:
蚍蜉撼大树: an ant trying to topple a giant tree -- ridiculously overrating one's own strength; a person's overestimating his strength; an ant trying to shake a big tree; ants attempt to shake a tree;
蚍蜉撼大树可笑不自量: a tiny insect trying to shake a mighty tree is ludicrously ignorant of its own weakness
太不自量: greatly over-rate [overestimate] oneself; think too much [highly] of oneself; too bold and over-confident
