We report the case of a 57-year-old male who attended the emergency department after inserting a ballpoint pen into his urethra 24 hours earlier during a sexual encounter. Rigid cystoscopy was performed and confirmed the foreign body to have caused a partial rupture of the posterior urethra. It was subsequently removed using a combination of graspers and stone retrieval baskets. Self insertion of foreign bodies into the urethra is often as a result of psychiatric disturbance, alcohol intoxication or as a means of sexual gratification. Posterior urethral injuries are more commonly associated with pelvic trauma and iatrogenic injuries. Injury secondary to self insertion of a foreign body is infrequently reported. Temporary insertion of a urethral catheter may be necessary. We reviewed the literature in relation to this unusual problem.