Usually a child (or parent) has dressed (the child) too quickly and, possibly not wearing underpants, has accidentally pulled penile skin into his zipper (Fig. 161.1). The skin becomes entrapped and crushed between the teeth and the actuator (slide) of the zipper, thereby painfully attaching the article of clothing to the body part involved (most often the penis, or less often the area beneath the chin). There is generally little or no bleeding, but it is very uncomfortable for the patient.