Many inappropriate songs were heard by spending time at my father's rugby club! A favourite was the following, sung to the tune of Le Marsellaise. WARNING you are likely to think of these words every time you hear the beautiful French national anthem (I know I do!), So don't read if you don't want to take that chance!
A Frenchman went to the lavatory,
To enjoy a jolly good shit;
He took his coat and trousers off,
So that he could revel in it;
But when he reached for the paper,
He found that someone had been there before
Ou est le papier, ou est le papier;
Monsieur, monsieur, j'ai fait 'manure';
Ou est le papier!