Fun Fast Water Balloon Fight! Tired of running to the sink to make more water balloons? This water bomb pump makes it very easy to make more water balloons. Simply place a water balloon on the pump nozzle, pump 9 times, and press the lever. Water will instantly fill up the balloon. Tie the balloon and it's ready to be thrown. Making water balloons become effortless! 500 water balloons are included. Kids can even race to fill up their balloons. Too slow and you get hit with a water balloon! Kids will have a blast!