CEDICT
愚蠢笨拙。元．無名氏《來生債．第三折》：「跳不出這塵寰世界，我覷了委實痴騃。」也作「痴呆」。
重編國語辭典
A foolish head makes for weary feet.
When you don't have brains, your feet get no rest.
Source: Tatoeba