Use a stealth shipment option...[basically just a padded envolope] when it comes take it to your room and empty it..then quicky place some bullshit letters or promotional pamphlet in there,,,if your mum says" what was in the letter honey??" you can style it out>But if she is as sharp as my old lady was....she'll probably see the lies on your face and you'll admit it and get chased to the bedroom ,then get a funny "woman style" beating ,,LOL ..ah the good ol' days