
Laugh like a drain
Vivid Imagery
The phrase paints a picture of uncontrollable laughter, almost like water gushing out.

He laughed like a drain, unable to stop the giggles.
British Origin
It's a British idiomatic expression not commonly used or understood by non-British speakers.

My British friend laughed like a drain at the comedy show.
Casual Setting
The phrase is informal and best used in casual conversation or informal writing.

At the party, we all laughed like a drain at the silly games.
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