To have been rendered less of a man, or been made to feel much less of a man through humiliation. This term is most often used to describe a male douchebag who has been pussywhipped by his woman.
The fact that lame Ed has chosen to neglect his friends and be home before midnight on a Friday night is proof that he has allowed himself to become completely emasculated by his girlfriend.
When in a Mac lab and everyone's computer freezes up, making everyone reboot. Upon rebooting the startup sound is played, making it sound as if a Choir is in the room.