Locking Apps that go on internet

OK, so I go into games and apps folder and hit the more button and see "LOCK".  It then gives me the option to lock my games and apps, and I think to myself "that would be cool seeing I have accidentally ended up on the internet without knowing it"- imagine my surprise one day when I took my phone out of my pocket after a 40 minute drive to see Mr. Obama's face on it-and then get the bill to boot...
Anyway, I locked the apps and it did nothing.  I was still able to initiate and get into the appps.  It did not ask for any password.  Am I missing something?

so im guessing you do not have data? if so then there is a way to stop apps and media net from accesing the internet Block Data for Games and Apps

I have more trouble accidentally getting on the internet than accidentally deleting apps!! 
I just set up a dummy connection and pointed them to that.  Don't want to delete them, as I will be getting a data plan next billing cycle and want to be able to use some of the non-pay-4-use ones.  Thanks for all the suggestions. 

just outta curiosity hows that we travel app coming along? i would love to test it out if completed,the google maps and unlocking fully worked perfectly i couldnt believe everything it did.