What is the most spontaneous thing you have done?

When my Father died in 1987 there was nothing keeping me in my cold, wet, miserable Home Town.
I got out a map of Western Australia, closed my eyes and my finger landed on Esperance, on the South Coast. 4000 km's away from Queenstown.
Within 3 weeks I had sold my House and was in Esperance where I lived for 4 years before moving to Perth.
Best spontaneous decision I have ever made.