A Har Har is normally a person called Isla, she is reading this right now because her friends have been calling her a Har Har. Isla a Har Har is something that you will never know, but don't stress it is nothing bad, don't get grey hairs over it. Your friends are just tricking you, but just letting you know that it does mean something and you cant find it on the Internet or in a dictionary you will never. Har Har out Isla D lots of love you fellow classmates
Isla is a Har Har
A sarcastic, yet respectful laugh most notably used over the internet.