Brandon Davis thinks he's got a career in mind, by trying to be funny. Right after coming out of rehab, he's drunk at Paris's launch, he goes on making old jokes new again.

But we all know old jokes are old jokes and should be in the past. And here it is.

I wrote a special new song called 'Firecrotch,' and it's for Lindsay Lohan!" He proceeded to ramble on, reminding folks about his infamous online video rant against the actress, which led to him checking into rehab in the first place. An insider tells us the "Firecrotch" song is real and was produced by Scott Storch, who twiddled knobs on Hilton's album.

What a boring tool.