糊涂虫 (hútu chóng) a muddleheaded person; addle head

Usage:

“糊涂虫”是指不明事理、做事糊涂的人,是一个贬义词。
“糊涂虫”refers to a person who is lack of common sense and doing something confused. It is a derogatory term.

Sentences:

1、她就是个糊涂虫,整天什么事情都弄不明白。
Tā jiùshì ge hútu chóng, zhěngtiān shénme shìqing dōu nòng bù míngbai.
She is indeed a muddleheaded person who understands nothing.

2、你这个小糊涂虫,是不是又忘了带钱包了?
Nǐ zhè ge xiăo hútu chóng, shì bu shì yòu wàngle dài qiánbāo le?
You are such a slob that you forget your wallet again?

原文链接