
Blockhead
Colloquial Usage
Used in informal, casual conversations, but could be offensive if not used among friends.
When Joe forgot his keys again, his buddy laughed and called him a blockhead.
Slightly Insulting
It implies stupidity or foolishness, so be careful when using it to avoid offending someone.
Calling the new student a blockhead just hurt his feelings.
Non-literal Meaning
It doesn't mean the person's head is actually like a block of wood—just that they're being unwise or unthinking.
She knew she seemed like a blockhead for mixing up the meeting dates.