How do people missuse food stamps and welfare?

If you mean, how do people cheat the food stamp and welfare system it should be noted at the outset the amount of this fraud is not great, though it has become more prevalent during these hard times. And, most cheaters are people at or near the poverty line.

There are several ways to cheat, but most common are not reporting other sources of income.

Maybe it's unreported child support or money they're earning under the table and not reporting on their taxes. Some cheaters lie about the number of people who live with them, not counting people with other incomes who are contributing to the group income. A common ploy is to say they have no significant other, when in fact the father of their children has a job and is living with them. Another is to list children who do not live with her as part of her household.