AceShowbiz - Chris Brown insists he was too busy watching pornography to bother with a house guest who has named him in a rape lawsuit.

An unnamed woman has accused Brown of imprisoning her at his mansion during a party and allowing her to be sexually assaulted by his friend, Lowell Grissom, but the singer insists he had no hand in the alleged rape.

The woman, named as Jane Doe in legal documents, also claims Brown provided cocaine and other drugs to his house guests.

Disputing her story in new documents obtained by The Blast, the singer points out that the accuser never claimed he touched her or physically harmed her in any way, and he also notes there's no mention of violence in her complaint.

Brown also states Doe pointed out that the star was "occupied with pornography and performing sexual acts with women" in another room when the rape attack allegedly happened, and he insists that should be enough to distance him from the scene of the crime, which is still under investigation.

Chris is demanding that his name is withdrawn from the Jane Doe's lawsuit.