My friend and colleague Richard Lederer just published a delightful book called "Nothing Risque, Nothing Gained" (reviewed in November 1995 Word Ways) that features virtually every form of ribald wordplay. Missing from this collection, however, are bawdy palindromes. Here in alphabetical order are some naughty palindromes I've dubbed Phallicdromes.
Word Ways: Vol. 29
, Article 12.
Available at: http://digitalcommons.butler.edu/wordways/vol29/iss4/12