Strangely, of all the books I've found boring, the dictionary was never one of them. I used to love "reading" the dictionary when I was a kid. I don't know... It just had lots of "interesting" little bits of information in it (and at the end of it).
The idea of throwing some of those books into the sea from a mountain never occurred to me. For me, most of those books were assigned reading; so they just made me "mean" or else made me feel like crying because I was expected to read them.