Sam's Room: A Samcedes vid featuring Drake.
I always let the music tell the story. So you must listen to the words to understand it.
After their respective nights of drunken debauchery, Sam calls up Mercedes while still intoxicated. As he recounts his escapades of sex, drinking, and pimpery, he realizes that he is ashamed of his lifestyle and recognizes that she's the only good thing for him and hopes to be that good thing for her.