When the formal private briefing of the attractive new teacher by 
the vice-principal was finished, the vice-principal took a few puffs 
on his pipe and said, "I have an informal piece of advice for you, 
Miss Bell.  There's only one way you can get along in this 
school without submitting to the sexual advances of the
principal."

"Oh my God!  Well, er, what was is that?"

"I'll explain it, " he continued, "as soon as you've undressed."