1: Smack de flag. 1.5: Listen to the unfitting music. 2: Spam SPACE until you lose all stress. 3: Click the star and heart down under the ball. 4: Check to make sure you have completed step 3. 5: Check one more time.
If you have stress, your problems are solved. Stress is one thing you'll never have to stress about again! Music is "We are Invincible" by Megatrax (I think) I got the idea for the face that appears when the ball is fully inflated from @ScratchU8