I'm a horrible fan, because my answer to the question in the thread title is "Yes, pretty much all of them". I'm horrible with lyrics. I sing along, but, I know I do it incorrectly. EVEN when I look up the lyrics to see what the actual lyrics are, I get it wrong. You can correct me, and I'll still get 'em wrong.
I can usually pick a lyric out, and I'll know it's from a U2 song, but I'll probably not be able to tell you which one, unless it's one that has stuck itself in my head in a loop. And that happens more often than me knowing any full song. I found myself liking the "let me in the sound" bit from Boots, but not realizing it was the same song as the gasoline/submarine thing. Right now, I've got bits from Xanax & Wine looping in my head, but I couldn't really tell you the lyrics, and it's an incomplete bit--with lockets and pockets and I don't know. I just get everything wrong. Or mostly everything wrong.
Though, I do typically know more lyrics than I think I do. So, that's something. Well, not really.
(About the only things I do know all the words to are books I read to my sons nightly for years. So, if you ever need to know all of Goodnight Moon, I'm your girl. Knowing the lyrics to my favorite songs? I can usually get almost ...most of them....)
(There's the part where I can't remember lyrics, and then there's the part where I hear the wrong lyrics. but that's a different thread, isn't it?)