The Cramps put bits of reversed audio into various tracks (Daisies Up Your Butterfly for example). Nothing mind-blowing mind you, then again most of their stuff is pretty satanic played forward!
Girl, you could use a good spankin’,
And baby so could I.
I love to hear the screams
Of the butterfly!
Now I don’t wanna be your dear, sweet friend;
I just wanna beat your little, pink rear-end
Mama ooh pow pow!
Who’s gonna twist and shout,
Mama oo pow pow!
Baby I’ll give you something…
Something to cry about!