Oh great, we are getting a woman employee.  Now we have to make sure that our conversations are work-friendly.
What exactly are you trying to say by making this statement?
Well if you were smart, you'd take it that way. What I'm saying is, I don't want a woman with big boobs at work all the time
It is pretty insensitive to make a joke about women being overly sensitive. Not all women act like that, and if that is how you feel then you could possibly be the problem. May be a good idea to reflect on the comment you made to be sure you do not get yourself into trouble.