have a bad case of the simples

Rur. to be stupid. That boy has a bad case of the simples. He can't understand anything. She acts smart enough on the playground, but get her in the classroom and she has a bad case of the simples.

Common Names:

Name	Pronounced	Usage
Tomlinson	['tɔmlinsn]
Easter	['i:stə]
Riccardo	-	Italian
TevfİK	-	Turkish
Giannis	YAH-nees	Greek
Mahesh	-	Indian, Hindi, Marathi, Gujarati, Telugu, Tamil, Malayalam, Kannada, Nepali