Rihanna: Alleged Stalker Sends Alarming Masturbation Video

Rihanna has an alleged stalker who was so invasive in her life, he sent her a masturbation video.

According to a search warrant, obtained by TMZ, the man had been dogging Rihanna, sending her threatening tweets between April and June of last year, saying among other things, "Should have killed @rihanna a minute back I would be good right now."