Your best bet is the drill press if you have one. A hand held drill works almost as well. You won't get too much milk out of it though. They don't have too much in there to begin with .
hammer and screw driver should do the trick-watch out for the juices, then hit it more so u can eat the awsom white shit inside
when i went to south america they were so damn good they could chop the top off with a machetti sp? use a stump outside cut them open left and right
Get a screwdriver and a hammer and knock the screwdriver into one of the indent thingys on the top of the coconut. I can never find coconuts around here. Last time, when the store finally had them, it was rotten. Nasty.
A drill press works if you're trying to get the milk. If not just knock the shit out of with something hard.