[B]antisemitism on wifeswap[/B]

my take

or perhaps a cuckold reference

From the OED:
"[ME. cukeweld, cokewold (3 syllables), adaptation of an OF. word which appears in 1463 as cucuault, pointing to an earlier *cucuald, f. OF. cucu cuckoo (in 15-17 c. cocu, 16-17th c. coucou, cuckoo and cuckold; mod.F. coucou cuckoo, cocu cuckold, also, dialectally, cuckoo), with the appellative and pejorative suffix -ald, -auld, -ault, -aud = It. -aldo, f. Ger. -wald: see Diez, Gramm. Lang. Rom. (1874) II. 346. (The Sw. dial. kukkuvall is from F.; mod.Icel. kokkáll from English.)
"Another OF. synonym was coucuol, couquiol, with dimin. ending, app. from Prov.: cf. OPr. coguiol, mod.Pr. couguieu, couquieu, couguou, cuckoo and cuckold. The current F. equivalent is the simple form cocu. The origin of the sense is supposed to be found in the cuckoo's habit of laying its egg in another bird's nest; in Ger., gauch and kuckuk, and in Pr., cogotz, were applied to the adulterer as well as the husband of the adulteress, and Littré cites an assertion of the same double use in French; in English, where cuckold has never been the name of the bird, we do not find it applied to the adulterer.]"