If there are people who are "stupid", they should be taught or justified ... instead of being laughed at. If it is not so, then what's the difference we are the same fools we are mocking it? Because among the nature of the fool is to make fun of or mock others.
Allah tells the story of Moses with his people the Israelites,
وإذ الله يأمركم أن تذبحوا بقرة قالوا أتتخذنا هزوا قال أعوذ بالله أن أكون من الجاهلين
"And remember when Moses said to his people," God hath commanded you to slaughter a cow. "They said," Are you making us mockery? "Moses said," I take refuge in God not to be one of the people the ignorant. "(Surat al-Baqarah: 67)
Worse yet, we become talkative to imitate the behavior of people we make as the laughing matter in our statuses. The goal is most simply to invite the laughter of the person who reads it or perhaps in order to show itself better than that "stupid" person. Wallaahu a'lam.
Sometimes the stupid person does not feel himself stupid. The model is more so. But it does not mean to be treated with a "stupidity" anyway, by mocking it, or making fun of it, making it a laughing stock everywhere. Do not we remember the word of God explaining the properties of the "Servant of the Mercy"? Has not God taught us how to deal with fools?
وإذا خاطبهم الجاهلون قالوا سلاما
"... and if the ignorant people greet them, they say good words." (Surat al-Furqaan: 63)
Sometimes we are often forgotten with the hadith of the prophet that we often hear. He sallallaahu 'alaihi wa sallam said,
من كان يؤمن بالله واليوم الآخر فليقل خيرا أو ليصمت
"He who believes in Allah and the Last Day should speak good or he should be silent." (Muslim)