Soooooo...this is, fittingly enough, called a booby trap. My son purchased quite a few of these things during fireworks season. Here in little Stevensville we just have 3 fireworks stands and we have our favorite and go there every year. Since we spend so much time and money there we consider them friends. When we got home, Milan proceeds to tell me that these are booby traps and that the lady at the stand said it was really fun to put them on peoples doors and toilet seats etc but if he told me she would deny ever saying it. Great. So for at least a week Milan was having a fabulous time going around and taping these on doors etc and scaring his sister. I just assumed that he was scared enough of me that he wouldn't try anything with me. Imagine my surprise one night when I opened the door to my room and BANG!! I about collapsed right there on the floor! My kids were already collapsed on the floor with laughter. Apparently watching your mother scream and do the frightened dance is very amusing. Then they ran--they aren't stupid! So anyways--now I am thinking that I should get me one of those bomb sniffing dogs for when I have to pee in the middle of the night. I just don't think my bladder could stand the shock. And obviously I can't trust my kids. Do they rent those dogs? Where is the manual that helps you with these thing??!!