no fool like an old fool

Meaning

1. (there's) no fool like an old fool

   an older person who behaves in a stupid way is worse than a younger person who does the same thing, because experience should have taught him or her not to do it

From the same entry

• act the fool
• any fool can
• be no fool
• a fool and his money are soon parted
• fools rush in
• make a fool of
• make a fool of yourself
• more fool
• not suffer fools gladly
• you could have fooled me
• fool around