lolcoaster
An emotional roller coaster involving many lolz. Usually a recurring joke. A lolcoaster can last anytime from one hour to a lifetime.
You: Hey Jimmy, remember Mrs. Johnston in Science class last year? She was such a fatty. And an annoying lolcow
Jimmy: OMG yes, I was on a lolcoaster the whole time. Lawls.
Jimmy: OMG yes, I was on a lolcoaster the whole time. Lawls.