A humorous, cartoon-style illustration of a small mouse with an oversized head riding a tiny bicycle toward the viewer in the pouring rain. The mouse is wearing a bright yellow raincoat and a comically large helmet that keeps slipping over his eyes. His whiskers are wind-blown, and his tail trails behind in a loop. The scene is full of detail: rain splashes off the wheels, little puddles reflect the street lights, and exaggerated raindrops fall all around. Add motion lines and playful facial expression on the mouse, showing determination and panic. Use bold outlines, expressive features, and a vibrant color palette. The setting is a city street, blurred slightly in the background to emphasize the mouse. Funny, whimsical, full of energy and charm.