Write an article based on this "Tap on your inventory. Look for the box that appears above your Blockhead character."
Choose a fruit or vegetable. It will say "Eat", as well as showing the count amount of the fruit or vegetable in storage.  If your Blockhead character is not very hungry, you'll probably only need to tap once or twice. If your character is very hungry, keep tapping until the hunger bar is full. If the hunger bar is already full, your character will not eat.