Matthew 5:22 "But I say to you that whoever is angry with his brother without a cause shall be in danger of the judgment. And whoever says to his brother, 'Raca!' shall be in danger of the council. But whoever says, 'You fool!' shall be in danger of hell fire. What you consider as a funny comment against your neighbour may not be considered funny by God. Guard your words, sieve them and get rid of the filthy ones.