Top Definition
A type of hang over that catches the victim completely unaware. After a night of heavy drinking the victim will be lulled into a false sense of security when they awake in the morning with a clear head and a sunny disposition. The hangover will then ambush the victim some time in the late afternoon.
I drank far too much last night but I awoke bright as a button at 9am. I thought it would be a fantastic idea to do some DIY that I had been putting, however at around 2pm I was struck down by a merciless guerrilla hangover and spent the remainder of the day with my head in the toilet.
by madgie March 07, 2010
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.