I've named some of mine. My first quilt I ever made was called my "Quilt of many Boo boos" because I made tons of mistakes on it (it was my first afterall). The first one I FMQ'd I named my "butt ugly quilt" and it still sits on the shelf waiting to have binding put on it.
The last one I finished the top of is called my "Twisted Rainbow" because it is from a Twister Pattern and it's a primary rainbow. I've made one I called a Crazy Rainbow, but once again the primary colors and the fact it was a Crazy quilt.