The elevator doesn't go (all the way) to the top British humorous informal
Used to imply a person who is not smart, stupid and dumb.
My girlfriend sold her house to satisfy her shopping demand. You know, the elevator doesn't go all the way to the top.
He thinks that falling in love with a rich girl will make him famous. The elevator doesn't go all the way to the top.
She plans to quit her job at this company and move to the one I'm working under a lot of pressure. The elevator doesn't go to the top floor.
The origin of this expression is not clear.
Very dishonest and deceptive
Don't play cards with Tom. He's as crooked as a dog's hind leg.
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