to grow senile; to be childish with age; to be mentally slow; to be befuddled; to play stupid; to say something stupid (oft. on purpose; esp. as part of a comedic routine)
to spend all of one's time in idle amusement
albatross (esp. the short-tailed albatross, Phoebastria albatrus)
stupid face; foolish look on one's face
you're a fool if you dance, and a fool if you just look on; we're all fools, so let's dance
stupid chatter; foolish talk
ridiculous; stupid; foolish; absurd; laughable
fools act without thinking
fools use people to pick up things lying at their own feet; stupidity of using people for small things
there's no medicine for stupidity
dementia pugilistica; boxer's dementia; punch-drunk syndrome
only a fool with no manners asks for another helping more than once; only fools are gluttons