Thanks for that Rooster ! Was in Ban Tak today with a family I have great affection for. Young lad (Thai ) threw water in the face of a passing MC . So I went over and motioned to him ( my Thai is limited unlike yours) that this was mai dee and keep it below the chest.
Very pleased to report that he understood the farang and conducted himself in exemplary fashion the rest of the day.
Songkran can be a lot fun but please everyone respect the elderly , people trying to make a living and basic road safety. A little water on the shoulder goes a long way towards cultural understanding. Sa wa dee pee mai.