if ya have to put lime in yer beer to make it drinkable, you need to find a better beer... feh if ya have to put lime in yer beer to make it drinkable, you need to find a better beer... fehCorrect. You put the lime in the coconut.
As I understand from my trip to Mexico many years ago the tradition started when people put a slice of lime in the opening of the can or bottle to keep the flies out.