Post Traumatic Threesome Disorder
An affliction of the mind suffered by those who choose to take part in a threesome which fails for a variety of reasons, but most frequently due to the impotence of one of the involved parties who may or may not have caved under the pressure.
Fuck, I thought afternoon delighting it with Mack and Cliff was gonna be awesome, but now I have a wicked bad case of Post Traumatic Threesome Disorder.