not exactly stupid, the person can be book smart but can also be: thick headed, clueless, lacking common sense, unable to catch onto hints
Caty: So has he catched on that you like him yet?
Helen: Sigh...no..Peter's so dense..
The Urban Dictionary Mug
One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.
Buy the mug