Random Bike is the bike of the Irresponsible Dad in Nova's Happy Wheels series.
Nova named it so as the bike seemed to randomly kill people and destroy things as he lost control of it. The name originated from one of Nova's first Happy Wheels videos in which the bike fell down from off screen randomly while he was in mid sentence. This was the first and only time random bike did not cause any damage (excluding eisiger's "It Keeps Happening" level). However, in one episode, while playing as Irresponsible Mom, the bike went apeshit and killed him as he tried to crawl down some steps using the 'nibblets' of his dismembered limbs.