A slip of the tongue experimentally induced by phonological priming, first described in 1970 in an article in the journal Psychological Review by the US psychologists Gregory A(dams) Kimble (1917–2006) and Lawrence C(harles) Perlmutter (born 1938) using the following word game, which also explains its name: ‘If one reads the following list of questions (Q) to someone, he will get either the answer (A) shown for the last question or else he will almost get that answer. In the latter case, the subject will probably recognize the point of the demonstration and indicate that fact. Q. What do we call a tree that grows from acorns? A. Oak. Q. What do we call a funny story? A. Joke. Q. The sound made by a frog? A. Croak. Q. What is another word for cape? A. Cloak. Q. What do we call the white of an egg? A. Yolk (sic!)’ (vol. 17, p. 373). See also cognitive illusion. Compare Moses illusion.