A trust fund baby is someone who is born into a family that has set up a trust fund specifically to provide for their needs. This can be a very advantageous way to provide for a child's future, as it ensures that they will have a cushion of money to fall back on throughout their life. There are many different ways to set up a trust fund, and it is important to consult with an expert to make sure that you are taking advantage of all the benefits that are available.