Not me, my relatives did. It appears that they innocently answered truthfully when the post office staff asked them what it was. But yea i've lied to ship some items which they normally dont accept. And that's what i will tell them to do.But why u need to tell them what's inside the parcel. If they ask what's inside just tell them its a toy for a small kid. Had shipped almost everything with them and never had any problem.
To clarify, the situation vary from branch to branch. I've shipped a video card in another branch office when the branch in my old residence campus speedpost rejected. But the question is why most of them don't.