[Palio di Siena]

Dumb as a oyster.

Southern Maryland

[BlueDragon]

Dumb as a oyster.

Happy as a clam.

"ugly with a prior" [conviction for the same]

grandma was slow, but she was old. (updated to) grandma was slow, but she was dead

used for anything;
dumb as
smarter than
uglier than
slicker than
weaker than
stronger than...[do I have to say it?]
shit

All dressed up and no place to go
refugee from a bugs bunny cartoon (from the psychedelic 70's)