I have owned some doozies over time. Most of them pretty horrible.
Captain Beefheart, Trout Mask Replica. I'm supposed to like this album. And Lord how I've tried. But I consider it akin to garbage art.
Magma, Magma Live. The most monotonous album I have ever heard, and it's a double LP set. Ugh! (I like the group, but this album is unlistenable.)
Scratches (forget the name of the artist). Yes, an LP composed of scratches. The artist took sand and rubbed it on a blank LP. It was packaged in a nice sleeve, but I was never sure if I was supposed to use it. (Why?) I played about ten seconds of it but took it off before my needle crumbled.
African Head Charge, Environmental Sounds. I love the band, but I just couldn't get used to the soundscapes on this album.
Lou Reed, Metal Machine. Lou still owes me a refund on this one. We had to warn our customers before they purchased it.
Renaldo and the Loaf, The Elbow is Taboo. I was into the Ralph Records thing for awhile and just about any of the albums could have made the list (especially The Residents'). This one sticks out for some reason. It was actually pretty good, especially the cut Extracting the Re Re.