ex·cla·ma·tion mark (n.):
1. a form of punctuation used by people who have forgotten how to write with any nuance;
2. a! form!! of! punctuation!!! used! by! people!!! who! have! forgotten!! how! to! write!! with! any! nuance!!!!!!!!;
3. a form of punctuation used by people who are trying to feign excitement;
4. a form of punctuation used by people who are trying to feign excitement in others.