Private secretary

I came home from w**k last night and
told my wife that I've been given a huge
promotion at w**k which means I get
my own office and I get to employ
my own private secretary.
"Well you'd better hire someone who's a
bit old, fat and ugly", she said, "I don't want
you choosing someone who you're going to
be tempted to have sex with."
"That's fair enough", I replied,
"When can you start?"