Abstract: An undergarment which keeps a male penis in a vertical orientation, whether flaccid or erect, or changing between such states, has a medial crotch panel. The medial crotch panel has ? taut upper section and more flexible and/or extendable lower region. The upper section is designed to hold a shaft of ? penis while the lower region holds ? scrotum thereof. In order to keep the taut state of the medial crotch panel the panel is connected to taut side panels and ? waist band, which, each are taut and tight along an anterior side of ? person wearing the undergarment. The crotch panel can be in an hourglass shape such that a tightest region thereof is at the narrowest portion of the crotch panel where ? shaft, below the glans, is held.