High Quality Content by WIKIPEDIA articles! Poster Boy is a New York City based street artist named Henry Matyjewicz whose only utensil is a razor. He is known for satiric collage-like works created by cutting out sections of the self-adhesive advertisement posters in the platforms of New York City subway stations, and pasting them back in different positions. He lives in Brooklyn, New York. Poster Boy also refers to a `Poster Boy movement` where other people produce similar unsigned work in the New York City subways imitating this original artist.