Sid Kipper and Les Barker have a lot to answer for

Agreed! There are many songs I can no longer hear or sing without being reminded of their parodies (or pastiches in some cases).

(Wild Mounting Time, Hollow Ground, Bored of the Dance, Holland's Meat Pies, Everything Glows, etc., etc.!)

Likewise I can never hear the Bee Gees without thinking of the Hee Bee Gee Bees (anyone remember "Meaningless Songs In Very High Voices"?) :-)