"Hello there. I'm clearly not in, but if you'd like, you may leave me a message, and I'll get back to you just as soon as I can. Sooner if it's an interesting message."

*beep*

If you have a question to be answered anonymously in class, drop it here!

[comments are screened to preserve the IC anonymity, naturally.]

"Hello, and thank you for calling Dite's Decadent Delights. None of us are able to reach the phone just now, so please leave a message and it will be returned as soon as everyone's dressed."