Maybe it has something to do with the authorÂs diet?
banana banana banana banana banana - Kurt Vonnegut
peach peach peach peach peach peach - Agatha Christie
watermelon watermelon watermelon watermelon watermelon watermelon - Mark Twain
broccoli broccoli broccoli broccoli broccoli broccoli - Chuck Palahniuk
steak steak steak steak steak steak - Ian Fleming
clam clam clam clam clam clam - Chuck Palahniuk
squid squid squid squid squid squid - Mario Puzo
And putting my previous comment into the mix:
word salad word salad word salad word salad word salad word salad - P. G. Wodehouse