Abstract: A disposable diaper includes a main diaper body with a flexible plastic housing. The diaper housing has a front wall and a parallel back wall sealably joined to the front wall. The front and back walls cooperate to define a housing chamber therebetween. The back wall has an aperture formed therein. The main diaper body also includes at least one layer of absorbent material disposed within the housing chamber. The diaper also includes a flexible sleeve for surrounding a user's phallus. The flexible sleeve attached to the back wall of the housing around the aperture, and is in fluid communication with the housing chamber via the aperture. The diaper may have an adhesive material attached to a lower portion of the front wall, to allow it to be removably fastened to an undergarment.