A horrible headache in the morning
I have terrible bonce rot this morning after such a mashed up night.
by Mark Brier December 09, 2007
bonce rot - where bonce refers to head and rot refers to a less than optimal feeling. i.e. My bonce is rotting (due to the pain I am in)
"I'm experiencing a severe case of bonce rot - my head feels like it's going to explode!"
by maria u November 28, 2007