One tequila. Two tequila. Three tequila. Floor. That’s how the saying goes, right? But what happens at ten tequilas? Well, to tell you that story, I’ll take you across land and oceans, through a handful of hot, sticky minibus journeys. A cramped and dodgy boat trip, plus an overnight stay in a ferry terminal. Then a hop skip and a jump to Koh Phi Phi, a small Thai island. The year? 2009. The month? A humid and monsoon-ridden August. Right to the best birthday I never had. Are you documenting your birthdays? Last month I turned 32. It made me…