Summer season is the ultimate time to fill up your organism with vitamines and other useful substances. But first let's find out how to cut the fruits quickly and correctly.<br /><br />If you forgot a knife for your picnic and don't know how to cut a watermelon, don't worry. Just take a thread or even better - a dental floss and cut the pulp from the down side first and later divide it into several equal slices as many as you need in a vertical movement