Gazunta said:
You guys are God damn voodoo artists. The foil always ends up breaking or there's a corner piece that tears away.
You need to pretend your teaspoon is a can opener.
The first stab at the foil is the most important as you don't want to leave too large a puncture. Once you've got the handle of the teaspoon in there, gently leverage it upwards against the foil and it should start to tear. Keep using the teaspoon handle until you've done about half the circle and then it should flap enough to allow sufficient purchase with your fingers. From here, you can tear it off by hand and you'll get a cleaner tear than you will from using the spoon.
I don't expect you to get it straight away, but with time, patience and a bit of luck, we should have you opening those Milo tins gracefully like a motherfucker.