What do Bob Dylan's Lay, Lady, Lay and Clapton's Lay Down Sally have in common?
ANSWER: They use the wrong verb. "Lay" is transitive. "Lie" would be correct. Unless Clapton was instructing some guy, probably drunk, to lay down Sally before he drops her or bumps her head into the chandelier.
True grammarians also insist Layla should be Liela.
In addition, behold the interrobang.