Not that hard to clean, just wait all summer until they evaporate. « » View Original Size × Share Tumblr Facebook Twitter Reddit Stumble Upon Email Embed × Share with friend Your Name Your Email Friends' Emails (Separate multiple addresses with commas) Send Submit a Picture June 6, 2007 See More high school water cups senior prank Recommended Comments () Picture This high school senior prank shows you college folk the proper way to do the cups full of water prank (hint: use 9600 cups). Picture And the janitors thought it couldn't get any worse than Big Percy puking in the pool. Well they were right, it's not worse, but still pretty bad. Picture IN YOUR FACE, JANITOR! Picture "Even though we had to clean it up the next morning, we got to miss our classes so it was definitely worth it." Picture Just wait 'til he shoots lightning at all the spectators. +250,000 views Picture I'll just wait until Grandpa dies and borrow his 5.1 system. Comments ()