The song is Expiration Date (유통기한) by Tablo. The video’s a short film, unrelated to the song/artist and taken in Boston. It’s the best video I’ve found of Tablo’s song, too. I’m a fan of his music, but he’s had a really rough life, you can read more about it here: The Stalking of Korean Hip Hop Superstar Daniel Lee (Wired).
And since the song’s in Korean, the lyrics are below the cut.