If it's the 0.1% chance that the OP is for real, ask your boss for examples of which WGs he's had the pleasure of, you'll get an idea of his tastes.
If it's the 75% chance the OP is a troll, go fuck yourself up the arse with a fence post.
If it's the 24.9% chance that the boss is winding up the gay PA, book him a real class A dirty whore, massive fake jubblies, fake tan, botox lips etc and get her to dress a slutty as possible - tits popping out, muff almost on show. Ask her to walk in reception and announce, loudly, 'blow job and hard doggy pounding over the desk for Mr .......'
Obviously insert the boss's name into .......
Ask if she was to his taste or if he prefers something more subtle.
You will be fired though.