BMO's skateboard is a four-wheeled device that BMO occasionally rides. In "Card Wars," BMO demonstrates its proficiency by riding it around the Tree Fort and successfully landing a kickflip. In "Time Sandwich," BMO claims to be helping Finn and Jake by stopping Magic Man from eating Jake's sandwich, when really it was only getting them to film a skateboard video. In the end, BMO rides the skateboard over Magic Man's face.
The skateboard is orange on its underside and dark brown on the top. On the underside is a decal of a black skull with horns and two hands. A single orange stripe runs horizontally across the top, and the wheels are a light shade of gray.