An erection that a male has upon waking or at times during the morning that is not due to sexual arousal and is triggered by a different part of the brain than erections that result from feeling sexually aroused. See waking with an erection.
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An erection that a male has upon waking or at times during the morning that is not due to sexual arousal and is triggered by a different part of the brain than erections that result from feeling sexually aroused. See waking with an erection.