In fact are incorrigible mischief-makers

Helen Campbell, The American girl’s home book of work and play, New York et Londres G.P. Putnam’s Sons, 1902, p. 217.

Crawfish are almost as amusing as hermit-crabs. « They pull up the plants, upset the rockery, nip the ends off the fishe’s tails, crack the mussel-shells, pull out the inmates and devour them, squeeze the caddis-worm from his little log house, and in fact are incorrigible mischief-makers. »