CEDICT
愚蠢笨拙。元．无名氏《来生债．第三折》：「跳不出这尘寰世界，我觑了委实痴騃。」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