Abed sees the world through the lens of TV, and the TV show he's a character in is often framed around him. This is his little monologue at the end of the series, a little fourth wall break.
if you believe you can lie, you can start lying down. And the somber, most unexciting part about that is, that people will close their eyes and go to sleep.
I know this is easier said than done, but stop waiting for something to happen and make it happen. Pick up some cool skill or try and meet some cool people. Don't want to waste your whole life waiting for something that may never come.