Boo doot boo
Boo doot boo ... etc
(HACK!)

Bah biddly biddly biddly hop
Bah diddly diddly cuddly op
Bah diddly huddly bubbly buggly
Huddly clop (and other various gruntings)

See also:
JustSomeLyrics
24
24.6
Def Leppard Def Leppard - Bringing On the Heartache Lyrics
Poppy Family Which Way You Goin' Billy Lyrics