Weeping Tom
A person who cries/weeps when made to watch people (usually their parents or other elders) engage in sexual intercourse. During sexual relations, Weeping Toms are prone to episodic crying and/or eretile dysfunction and/or female pattern vaginal dryness.
"I thought this guy was different, but right in the middle of a sweet blow job, he goes soft and starts bawling. It turns out his folks used to make him watch their gang bangs, and he's still not over it. Why do I always have to end up with the Weeping Toms?"