My supervising Professor impregnated at least one of his grad students, before my time.
The real breaking point in our working relationship came when I expressed my disapproval of his treatment of one of my colleagues [1]. To my shame, the main reason I found the courage to do so was because I was drunk at the time.
[1] Not harassment, just sexist douchebaggery. Which contributed to the relapse that put her in a psych ward for two months.