I f'ing hate UPS. They knocked THREE times and got my dogs barking extra loud while I was trying to get my baby off to sleep for his nap. I really don't f'ing care if you have to come back with some unknown signature required package. I don't care if it's christmas eve or if it was heavy or whatever the hell your reason for knocking THREE times was. Even if I didn't hear you knock, don't you think I heard my f'ing dogs bark like crazy the.first.time?!?! JFC.