The original cover for Smell The Glove (which the Band can't understand why the label finds offensive).
Bobbi Flekman: You put a greased naked woman on all fours with a dog collar around her neck, and a leash, and a man's arm extended out up to here, holding onto the leash, and pushing a black glove in her face to sniff it. You don't find that offensive? You don't find that sexist?
Ian: [...] Well, you should have seen the cover they wanted to do! It wasn't a glove, believe me.
The pedophilia humor in "Tonight I'm Gonna Rock You Tonight."
You're sweet, but you're just four feet
And you still got your baby teeth
You're too young, and I'm too well hung
Tonight I'm gonna rock you
Crowning Music of Awesome: Not only are some of the songs (Stonehenge particularly) fairly awesome, but when you remember that they were written as parodies of real rock songs, they become all the more so.
It is telling that the songs still really work even though they're comical and mostly parody. The follow-up album, Break Like The Wind, has this in spades too, and has a bunch of prominent musicians who got the joke (and didn't take it too seriously) guest-starring in the songs.
"There was a Stonehenge monument on the stage that was in danger of being crushed by a dwarf."
"You think of yourself as a preserved moose?"
Fridge Brilliance: The "Mach" piece. Nigel says it's a combination of Mozart and Bach, but it's also a mach piece (as in, say mach 5), something the band members would likely call their music, as well as a "mock" piece, because it's not a real song; finally, if you know your Mozart and your Bach, you know that to call this very pretty but not-at-all classical piece of music a 'combination of Mozart and Bach' is, well, a mockery.
The story about Spinal Tap's first drummer dying in a "bizarre gardening accident". On August 5th 1992 the drummer Jeff Porcaro from the American rock band Toto died from what was originally believed to be an allergic reaction to a pesticide he was spraying in his garden. The coroner's report later stated his death was due to heart failure resulting from cocaine abuse. His friends and family disputed the cocaine use, claiming that Porcaro had a family history of heart disease.
Ronnie James Dio had a thumb severed while working in his back yard. He even started calling it a bizarre gardening accident.
Billy Joel retiring from rock to write classical piano pieces is bizarrely reminiscent of Nigel's own hidden talents.
Rob Reiner and Christopher Guest worked together again in The Princess Bride, in which Guest's character has eleven fingers.
Ho Yay: Nigel seems to have a crush on David. At the launch party, both Nigel and David have venereal diseases on their lips (indicating if they weren't kissing each other, they were engaging in a three way.)note There were deleted scenes about Spinal Tap's support band. A still of the female lead singer (reprinted in a book about the movie) shows that she also had a herpes blister on her lip, the implication being that she went through half of Spinal Tap before she and the rest of her band decided that Tap's evident massive unpopularity meant that being Tap's support band was actively bad for their image, and bailed early on in the tour. They ended up being cut from the final film. As Roger Ebertnoted in his re-review of the film:
Ebert: When Nigel learns that David's girlfriend Jeanine Pettibone is flying over from England to join the tour, his heart sinks. His crush on David is obvious to everyone except, of course, David.