You Kids Get Off My Lawn

This is the content of an email sent to me today by my major advisor.

Lab Peeps:

Abstracts for the Association of Southeastern Biologists meeting in Asheville NC in April are due Jan 10.
http://www.asb.appstate.edu/meeting.php

Am I the only one who finds this wholly inappropriate? Would it be acceptable for me to write a professional email and address it to the"Lab Bitches", or maybe "dudettes" or "chicks"?

There are some things that I think you surrender when you turn 40, get a real job, and begin to supervise people. Ebonics in your professional emails is one of them.