In order to raise awareness about poverty and hunger among children, Sesame Street is debuting a new character named Lily who is "food insecure," meaning she doesn’t know where her next meal will come from. In other words, the mantle of "saddest Muppet of all time" has been stolen from Snuffleupagus (and if you don’t think Snuffleupagus is sad, just look into his eyes) …