Similar story - kinda....
Law person minding her own biz on the way home at night... a girl is on the sidewalk kinda "distressed" and appears to be wanting help. Girl is a neighbor and turns out it appears to be another stupid "domestic" (couple screaming upstairs) and a cruiser is already on it's way.
Anyways.. she goes to the apartment door and bangs to quit the screaming - eventually the door opens and a guy thrusts his hand in her face and shouting stuff about "That's what he deserves!" blah. She looks to see what is in his hand and it's dick
It was a gay relationship that went sour and he decided to cut his partners penis off - apparently because there was another party involved in their "relationship"
The victim was rushed to hospital and lived - but was on/off for a while and could have been a homicide. People!!!