Older than you think

     "I'll tell the management that he's wanted for an urgent business matter, so as not to make unpleasantness."

    "They won't like it."

    "Then they'll have to lump it."

(from The Unpleasantness in the Bellona Club, by Dorothy Sayers)

    This passage is interesting to me because of the expression "lump it." In my youth it was common to hear, "If you don't like it, lump it," I assumed that was a coinage of my generation. However, this novel was copyrighted in 1928, which means that this particular slang expression dates back at least to the Flapper Era.