Spinal Tap song featuring two guitarists (as well as the usual bassist) playing bass, and lyrics such as:
"The bigger the cushion,
The sweeter the pushin',
That's what I said.
The looser the waistband,
The deeper the quicksand,
Or so I have read.
My baby fits me like a flesh tuxedo.
I'd love to sink her with my pink torpedo!
Big bottom
Big bottom
Talk about bum cakes,
My gal's got 'em.
Big bottom,
Drive me out of my mind.
How can I leave this...behind?"