What is "tubby's"

Tubby's is an American restaurant chain based in Clinton Township, Michigan, a suburb of Detroit, Michigan. Founded in 1968 in nearby St. Clair Shores, the chain operates more than 70 stores throughout Michigan, primarily in the Detroit metropolitan area. The chain primarily serves submarine sandwiches and salads, along with soft drinks, french fries and soup, and is known for its grilled subs.