Bang Lipstick Our Bang Lipstick looks like a real lipstick but its not, just place a harmless cap on the device and when they take the cap off, it will startle with a BANG from the cap. Use this over and over to prank family and friends with this classic practical joke. A harmless cap that goes off when it is set off, its just enough to startle and have some fun pranking with this practical joke product. Uses any type of harmless strip caps to get the bang effect, these are not included.Have fun with this classic practical joke to prank your family and friends.