The New York Post's Page Six reports that cult film director John Waters ("Hairspray") told Details magazine:
"I'm erotically obsessed with Alvin."
Further, he supposedly had some erotic art made of the cartoon character.
Now this reminds me of a print-out of some adult Alvin and the Chipmunks fan-fiction I found about 14 years ago at a comic convention. I forgot how I got it, I think a friend gave it to me; I just remember that it was printed out on this old daisy-wheel font and came on that scrolled paper that's all attached to each other. And me and my friends looked at it and was kind of like -- "this is kind of squicky." And I think we burned it.
Just in case you're wondering, it was Alvin & his brothers doing the Chipettes.
At the OS we do not necessarily condone chipmunk porn. However, this is ok:
Alvin: adolescent chipmunk with impulse control issues
Brian: middle-aged dog who reads The New Yorker
And if you're wondering if there is erotic Brian fan art on Google image search...yes. Yes, there is. I didn't look for it. That happens a lot on Google image search. You don't look for it. But it finds you. And then you must scrub yourself clean and swear off the Internets for at least an hour.