Listen to This Old Man (Knick-knack Paddy-whack) online. This Old Man (Knick-knack Paddy-whack) is an English language song and is sung by Nursery Rhymes ABC. This Old Man (Knick-knack Paddy-whack), from the album Nursery Rhymes for Children - Kids Songs & Childrens Music for Pre-School Toddlers & Babies, was released in the year 2016. The duration of the song is 2:25. Download English songs online from JioSaavn.