Luxo Jr. (also known as Luxo Junior) is a 1986 American animated short film produced and released by Pixar. Written and directed by John Lasseter, the two-minute short film revolves around one larger and one smaller desk lamp. The larger lamp, named Luxo Sr., looks on while the smaller, "younger" Luxo Jr. plays exuberantly with a ball to the extent that it accidentally deflates. Luxo Jr. was Pixar's first animation after Ed Catmull and John Lasseter left the Lucasfilm Computer Division. The film is the source of Luxo Jr., the mascot of Pixar.

Plot

In a dark room, a large illuminated balanced-arm desk lamp named Luxo Sr. sees a small yellow ball with a blue stripe and a red star on the front roll-up to him. He eyes the ball curiously and pushes it away, but the ball comes back to him. He pushes it away again, but it rolls past him as Luxo Jr., his happy and excited son, hops over and plays with the ball. Luxo Jr. then balances himself on top of the ball and bounces on it excessively, causing it to deflate. Luxo Jr. flips the deflated ball onto its side and looks up at Luxo Sr., who gently admonishes his son. Luxo Jr. then hops offscreen in shame but is later seen playing with a beach ball. Luxo Sr. looks at the camera, then shakes his head in embarrassment.