The act of grabbing both of someone's nipples and/or the fat surrounding them, and hoisting them aloft by them. Depending on the weight of the person being Griffin Jibbed it will usually take a lot of strength to accomplish this task.
Guy 1- Why weren't you here yesterday?
Guy 2- I had to go to the emergency room because I got Griffin Jibbed.
Guy 1- I'm so glad I'm not you.