The Super Mart is a supermarket that first appeared in "Cereal Offender".
Super Mart is first seen in "Cereal Offender", where Lincoln offered to do Rita's shopping so that he can keep the groceries under a budget and get the new Zombie Bran cereal. His sisters tag along where Lincoln had to keep them from getting in trouble with The Manager. Lincoln fails when his sisters demand a treat which led to a display that Bobby set up getting knocked down and the Manager throwing them out. Rita was not pleased with the outcome and states that she will have to go grocery shopping in the next town over for a while.
In "Last Loud on Earth", the boys get chased in there.