make a spectacle of (oneself)

Translations
выставлять (себя) на посмешище
She made a spectacle of herself by arguing loudly in the restaurant.
Она выставила себя на посмешище, громко споря в ресторане.
Definitions
To attract attention to oneself in a way that is extravagant, showy, or dramatic, often to the point of being embarrassing or inappropriate.