"Keep it steeez" is a expression that originated in the skateboarding and street culture. "Steeez" is a shortened form of "style" or "steeze," referring to a person's unique and stylish way of doing something, often related to sports like skateboarding, biking. When someone says "keep it steeez," they encourage others to maintain their individual style and flair in whatever they are doing. It's a positive and supportive expression within these subcultures especially BIKELIFE!