My absolute favorite, from my younger sister: "beister". Meaning = "spider." I have no idea why this one has stuck around so long or why it is so pervasive, but even my husband knew it by the time that Spiderman came out, because he mocked my sister by calling it Beisterman.

Also, I can't remember how old your munchkins are . . . but, my kids love this site, which is deceptively simple: Poisson Rouge. (http://www.poissonrouge.com)