the subject has been extensively dealt with in traditional song.

The cuckoos nest - of course. And all those nightingale songs. the nightingale is a symbol for passion(the willy) and 'the valley below oh oh oh oh oh oh' (is probably gynaelogical rather than geographical).

In conteporary song there is my effort Hairy Mary (dealing with that thorny contemporary issue of pubic hair grooming:-
http://www.bigalwhittle.co.uk/sitebuildercontent/sitebuilderfiles/hairymary.mp3
If its just the word you want assimilated into a song
I'm not saying you c'u'n't
But maybe you sh'u'n't'.