your thick head

Meaning

1. used to show that you are annoyed that sb does not understand sth

   When will you get it into your thick head that I don't want to see you again!

From the same entry

• give a thick ear
• thick as thieves
• thick as two short planks
• a thick head
• a thick skin
• blood is thicker than water
• thick on the ground
• in the thick of
• through thick and thin
• lay it on thick
• thick and fast