| Subject | English | Russian |
| gen. | brightest crayon in the box | самый умный (Alexander Demidov) |
| idiom. | not the brightest crayon in the box | не самый умный (Val_Ships) |
| gen. | not the brightest crayon in the box | звёзд с неба не хватает (another term for not the sharpest tool in the shed implying that you are a total dumbass well i guess we are not the brightest crayon in the box. UD Alexander Demidov) |