I know a man named Dallas and his son is also named Dallas. I never met the son, but the father bore a distinct resemblance to the walrus from The Walrus and the Caroenter out of Alice in Wonderland.
http://members.tripod.com/lcw1980/alice047.jpg
That is all I think about when I hear the name. He was a nice man, but the walrus is too much for me. I also think it has kind of lispy sound to it.