Mine personally all include gifs, but they vary from funny and weird, prideful, sentimental, depressing, slightly mad, etc. I always have them related, though. For example, the avatar in which I have as I post this is a rainbow wolf. Burgundy is a wolf, and the rainbow signifies my support of anything LGBT and my pride at being open with the community. The wolf is also howling, which shows how free it is, and how free I feel, too. My signature is this awesome gif I found of a 3D swirling rainbow that also signifies my pride and support.