Can I permanently delete private messages on Facebook?

[Andrew]

On me, and the other person receiving the message's account? I have posted drunken comments to people on Facebook, which is quite embarrassing, is there any way I can delete all this without having to ask them?

[abraXus]

you can delete "comments" you have posted, assuming you can see the comments still, but there is no way to delete someone else's copy of a drunken private message you sent them

think of it like this : how do you delete a voice message you left for someone on their phone when you were drunk so they cant listen to it? you cant, right? you would have to have access to their account to do that

works the same way on facebook