There's no fool like an old fool
(there's) no fool like an old fool
An older person who makes foolish decisions is especially at fault, as experience should have taught them not to do such things. My grandfather got caught trying to buy weed from some kids in the neighborhood. No fool like an old fool, eh? There's no fool like an old food—what did you think would happen if you tried to hide your profits to avoid the taxes?
There's no fool like an old fool.
Prov. Cliché Old people are supposed to be wise, so if an old person behaves foolishly, it is worse than a young person behaving foolishly. As old Mrs. Fleischman watched her husband try to dance the way their grandchildren danced, she muttered, "There's no fool like an old fool."