priapism

noun3

1. •
   A potentially painful or harmful medical condition in which the erect penis does not return to its flaccid state (despite the absence of both physical and psychological stimulation), often as a result of a spinal injury.
2. •
   An instance of this.
3. •
   (figurative) The obsessive focus on one's genitals or on the need for genital gratification.

   • [M]any on the right have found themselves justifying our current president's priapism with the same arguments that liberals once used to excuse Clinton. — 2018