We report two cases of rectal foreign bodies inserted for sexual stimulation, one requiring hospitalization and the other only a minimally invasive extraction procedure as an outpatient. Case 1 involved a 43-year-old man who had inserted a rubber ball into his anus for sexual stimulation the previous night. He was unable to remove the ball and was taken to the emergency room because of abdominal pain. Transanal foreign body extraction was performed under general anesthesia by grasping the rubber ball with Kochel endoscopically. Case 2 involved a 27-year-old man. He visited our emergency department after inserting a rubber ball into his anus for sexual stimulation, but was unable to remove it. Under emergency colonoscopy, we pierced the rubber ball with a 25-G needle tip catheter and sucked air out of the ball with a 20-ml syringe connected to the catheter. We extracted the collapsed ball using foreign-body forceps. No complications were encountered.