The version of "Bay of Mexico" in the DigiTrad Database contains the following verse which I've never heard before: "Pretty gals in Mexico/Wriggle their arse with a roll and go." Apart from the bad grammar ("arse" of course should be plural), does this kind of thing bug anyone else but me? I like bawdy lyrics when they are clever. I don't like dumb lyrics of any stripe. And in my opinion, this is a dumb lyric. Does anyone know if this verse is in fact traditional?