Ok l will "add my two cents worth".
"He's still wet behind the ears!"
"Tighter than a gnat's arse stretched over a 55 gallon drum!"
"I'll bet a dime to a doughnut hole"
I remember "now we're cooking with gas!" Must have come from way back when people were changing over from cooking on a wood stove. That would have no meaning at all to the young folks of today.
Similarly, "He was going like 60!" would mean nothing today, unless it means some old man holding back traffic on the freeway.
i looked up that pig in a poke thing, once.
that refers to an old time scam where someone would pay for a pig, get home n find a cat in the poke bag.
we have always had thieves.