Mum. Dad. Sis. Pop. Tit. LOL.
Palin = again, hence palindrome = "repeating course". I only know a Byzantine good one, which every Greek knows, as it was inscribed around a small fountain at the entrance to the Aghia Sophia church in Istanbul, and dates (I believe) from the 14th century AD:

NI@ON ANOMIMATA MI MONAN O@IN

(where @ = the Greek letter for the sound "ps")
It means "Wash the sins, not just the face"

Then again, there is Monty Python's Notlob....