like Cha-ha. A word that means, Im really laughing but totally not. You can use it as a cover up word. In the event that you didnt mean to state whatever just arrived of one's mouth, you can easily protect it up with an ar gar. Also, you can make use of ar gar as a surfer laugh. Similar to cha ha. Like..cha ha which was great. Surfs up, ar gar. Argar is another name for a disabled person.