Step 1: Draw two broken lines, connect them, and add a short line in the middle to simulate the shape of the straw.

Step 2: Draw an ellipse under the straw, add an arc to indicate the thickness, then add two vertical lines and connect them with the arc to form the outline of the cola cup.

Step 3: Add small expressions and decorative lines to increase the three-dimensional sense and realism.

Step 4: Color and finish the stick figure of Coke!