A person is having a readathon when they are reading a book series from start to finish without reading other books in between or taking long breaks. In addition to book series readathons, one can also have author and genre readathons.
Boy: I finished Harry Potter and the Deathly Hallows last night, and with that my Harry Potter readathon!
Girl: You're such a geek. I still have two books to go.
IWAIM is the abbreviation and acronym for the critically acclaimed Bright Eyes album entitled "I'm Wide Awake, It's Morning", which was released in 2005.
The album is one of the best records ever released, and is a flawless masterpiece in every sense of the word. All the songs on the record are written by Conor Oberst, one of the most talented songwriters of his generation.
Guy: I decided to stay up and listen to IWAIM instead of going to bed last night. Road to Joy came on just as the sun rose. It was unbelievable.
Girl: You'd so do Conor!
Guy: Who wouldn't?