Click the green flag. After the cucumber says, "Enjoy!" Then you can control the cucumber with your arrow keys. The up arrow is jump, the down arrow is duck, or squash, and the left and right arrow move the cucumber from side to side.
I couldn't have done this without my two helpers, ESP___-_- and Frozen201380. Thank you guys and PandaPup35, my third follower's, support! You guys really inspire me to keep Scratching.