Or spud guns

A couple days ago we did a science experimenter about spud guns. We had to get some straws and we had to jab the straws into the potatoes but it didn't really work because the straws kept bending which was really annoying and my potato kept falling out and not shooting out. Some peoples spud guns worked but mine didn't which was very disappointing because we used different straws. Mine didn't work because it wasn't air tight.