A prude regards all nudes as rude
unchanging in their attitude.
Which they perceive as rectitude.
A sign of their ineptitude
They cannot see as pulchritude
the naturalness of being nude.
The will allow no latitude,
just being bare to them is lewd.
It must be sad to be a prude.
Because they have misunderstood
that being nude need not be rude
It need be neither lewd nor crude
Reluctantly I must conclude
that once a prude always a prude.

ivor or ivor.e hogg

http://www.poemhunter.com/poem/pure-prejudice/