Good night, sleep tight.
Don't let the bed bugs bite.
If they do squeeze them tight.
( TFD is sporting this season's finest necropants, Mon 18 May 2009, 2:23, archived)

Or sleep with a hermaphrodite.

( Aardvark and so at last, I understood, Mon 18 May 2009, 2:25, archived)

Or send them to their deaths in a storm on a kite.

( TFD is sporting this season's finest necropants, Mon 18 May 2009, 2:26, archived)

or
brush your teeth with blood let in a knife fight.
( P3L3 is not my real name., Mon 18 May 2009, 2:34, archived)