If you want to really have fun, write software that uses their terrible SDKs to plug into and extend Lync/Skype for Business.
Still, since it's bundled with Office and Office365 Exchange, lots of people are using it and dropping SameTime or XMPP or other options in large corporations.
I was going to say try to prefix with "!! ", but it doesn't seem to work anymore! It used to disable formatting and change to monospace font.
!! SQL statements, source code fragments, etc.
Of course, the people you're chatting with have to do it as well otherwise they'll still see them, but if you're sending SQL statements, log messages, and such, it makes sense to disable them.
The list of gripes is too long...but let's just say With the lost of productivity I hope they are paying my company to use it.