Haha sandwich

When you are messenging someone (ie: facebook chat, AIM, MSN messenger, and a plethora of others) and you type Haha, followed by a quick reply, hastily followed by Haha again. May be a result of something actually funny, extreme fatigue, boredom, or thinking the other person is a fucking idiot and they need to stop talking to you right now because they are annoying as shit and all I am going to reply from now on is Haha until they realize I fucking hate them and stop talking to me.