Early to mid 2000s, obscure American horror movie, possibly b-rated. Begins with a man being tortured by a rat, I believe with a bag over his head or something. Later on two men try to break into the house to maybe rob it, but there is already a killer in the house. At some point the killer forces a woman to perform oral sex on her brother, taunts them, then sodomizes the man with a pool cue or some sort of stick, all the way up through his mouth. Very disgusting movie but I can't remember the title now and it's bothering me. I want to say it was a one-word title that literally described how gross the movie was lol.