Could you please tell me the meaning of the expression "pull a boneheaded move" ?
Hello everyone.
I am reading an article with the following paragraph
"How can someone so smart be so stupid? We’ve all asked this question after watching a perfectly intelligent friend or relative pull a boneheaded move. "
I've already tried to find out the meaning of "pull a boneheaded move" on Google but I didn´t find it. Therefore, could you please help me understand the meaning of this expression?
Also I´d like to know if there is an expression (S) with the same meaning, I mean interchangeable as "pull a boneheaded move"?
Have a nice day.

Question

Could you please tell me the meaning of the expression "pull a boneheaded move" ?
Hello everyone.
 I am reading an article with the following paragraph 
"How can someone so smart be so stupid? We’ve all asked this question after watching a perfectly intelligent friend or relative pull a boneheaded move. "
  I've already tried to find out the meaning of  "pull a boneheaded move" on Google but I didn´t find it. Therefore,  could you please help me understand the meaning of this expression? 
Also I´d like to know if there is an expression (S) with the same meaning, I mean interchangeable as  "pull a boneheaded move"?
Have a nice day.

Answer

The term, "bonehead" suggests that the person referred to has no brains and that his head is just filled with bone. So, to "pull a boneheaded move", is to do something that shows a lack of intelligence or to do something ignorantly.

Answer

you can interpret "bonehead" as "idiotic" or "stupid"  and "move" is the action taken.

In other words to "pull a bonehead move" = " to do something stupid / to make an idiotic mistake "

Answer

"Bonehead" = "stupid, moron", so the expression means "to do something stupid (moronic)".

**Regards!! :D

Answer

Thank you all. Thanks for helping me! :)