1 definition by Scots Phrases Rock!
To be told to "Bile yer Heid" or Boil Your Head, is to be told not to be so ridiculous or to be so absurd. Can also be used as a term of exclamation if someone is doing something stupid and its annoying to you. It is a common phrase in old scots but is still used today.
by Scots Phrases Rock! March 22, 2005