A swan, a pike, and a crawfish walk into a bar.

Shimon Edelman A swan, a pike, and a crawfish walk into a bar. 257-264 2008 20 J. Exp. Theor. Artif. Intell. 3 http://dx.doi.org/10.1080/09528130802319318 db/journals/jetai/jetai20.html#Edelman08a