Patrick Roche is a poet and a student at Princeton University. He grew up with an alcoholic father whose addiction ultimately killed him. You learn that at the beginning of Roche's poem entitled "21." It provides a timeline of Roche's experience of his father, but told in reverse, from the present day to Roche's earliest memories.
It's simply beautiful.
Roche condenses the pain ingeniously in this presentation of his poem at the 2014 College Unions Poetry Slam Invitational in Boulder, Colorado. The line at 0:50 is particularly artful.