I bought my middle nephew a video game one Christmas, and the kid at the register didn't remove the plastic "security" package on it. Thankfully, my brother (not Lady's Human - other brother) took it as a personal challenge, and dismantled the hard outer plastic within a couple minutes with the leatherman tool he always has in his pocket.

This was a minute after I said "I do still have the receipt, I can take it back and have them remove the packaging ..."

I also once spent an uncomfortable Easter because the saleswoman had removed just one of the two "security tags" from the dress I had bought - right under my left armpit. (Thankfully the dress had a 'jacket' that covered it.) The darn thing didn't beep when I was LEAVING the store, or I would have known then - but it sure did when I brought it back to have them remove it!