They drive me insane. I tear the top off, as instructed, then I try and open the damn things. It doesn't matter which way I slide the "zip" the bag steadfastly remains tightly closed. It drives me nuts. I freely admit that this type of thing is my nemesis, you lot probably open the pack easily and dish up your Michelin starred meals without even breaking into a sweat.
Anyone have the same problem? Any other packaging drive you to despair?