Rush's second instrumental since they resumed writing them on Presto, carrying the delightfully absurd subtitle "Part IV, 'Gangster of Boats' Trilogy" — a joke that playfully mocks the pretensions of progressive rock concept albums. The origin of the name reportedly comes from Alex searching for something in the studio during demos for the previous album.
The track showcases all three musicians at their most playful and virtuosic, with Lee's bass work particularly dazzling. Despite its relatively short runtime, it packs in an impressive variety of moods and textures.
"Where's My Thing?" became Rush's second Grammy-nominated song, earning a nod for Best Rock Instrumental Performance in 1992. It lost to Eric Johnson's "Cliffs of Dover" — and Johnson himself opened for Rush on the 1991 leg of the Roll the Bones tour.